Etta James famously crooned, "This is a man's world," but in recent decades, the Western world has aligned itself with a more gender equal society, and in some cases, this has paid dividends financially. Yes, many of these newly-empowered women are kicking ass in the boardroom and building businesses from scratch, something that was almost unheard of in James's era.
So to inspire younger readers, here are 30 of the world's youngest female billionaires.
1. Sara Blakely, 47
Net Worth: $1bn
Sara Blakely has amassed a $1 billion, and she isn't even 50! The fitness guru, who doesn't look a day over 40, founded the American fitness apparel company Spanx, which specializes in a variety of gym clothing.
This ranges from niche underwear to jogging bottoms, and leggings. The Atlanta-based company has made the 47-year-old a household name in the world of American commerce, so much so that Time Magazine included her in their "Time 100" annual list of the most influential people.
2. Aerin Lauder, 48
Net Worth: $2.6bn
Heir to the Estee Lauder line is the 46-year-old Aerin Lauder, whose family's shampoos have generated billions around the world. However, her current net worth of $1.85 billion is pretty impressive considering she is yet to inherit most of the company's stock.
Still, with 16 million shares in the company along with her fashion line, cosmetic brand, and furniture company, Lauder has used her start in life to branch out into other facets of the business world, which have helped boost her net worth.
3. Dylan Lauren, 44
Net Worth: $4.7bn
Dylan Lauren is the daughter of the famous fashion designer Ralph Lauren. The preppy, and some would say iconic brand has become a staple part of many middle-class American's wardrobes, while one gang in New York has even adopted the brand as their go-to uniform.
Responsible for some of the most famous fashion campaigns, Dylan's net worth of $4.7 billion relates to her future inheritance of the company. However, Dylan has also expanded her reach in the business world, opening Dylan's Candy Bar, the world's largest candy shop.
4. Ivanka Trump, 37
Net Worth: $3bn
The daughter of President Trump has very much forged her own career path ever since she came to prominence as one of her father's assistants on The Apprentice. Fast forward a few years and Ivanka is now one of the most photographed women in the world.
Now serving as Executive Vice President of Development & Acquisitions for the Trump Organization. Ivanka's wealth, as well as her future inheritance and marriage to White House employee Jared Kushner, sees her wealth hover around the $3bn mark.
5. Josie Ho, 43
Net Worth: $7bn
While Las Vegas has long been considered the capital of gambling, Macao's resorts have been rivaling Nevada's glitzy lights for some time. Unsurprisingly, many billionaires run these casinos, including Stanley Ho, whose wealth has rocketed to over $7bn in recent years.
His daughter, Josie Ho, is also very wealthy and stands to inherit the majority of the casino magnate's fortune. A quirky personality, Ho has tried her hand at acting and went as far as to play a prostitute. Unsurprisingly, her father was quite angry.
6. Holly Branson, 37
Net Worth: $3.8bn
Holly Branson is the daughter of entrepreneur Sir Richard Branson. The blonde haired beauty is estimated to be worth $3.8 billion thanks to her father's extraordinary success with his Virgin businesses, but rather than join her father, Branson decided on a career in public service instead.
Yes, despite being heir to one of the largest fortunes in the world, Branson spends her days in the neurology department of the Chelsea and Westminster Hospital.
7. Petra Ecclestone, 29
Net Worth: $3bn
Along with sister Tamara, Petra's father is the billionaire motor racing tycoon Bernie Ecclestone, whose net worth has been well-documented, mostly because he has given a lot of it away to his two daughters, who have gained a rather infamous reputation in the British press. For instance, when the socialite and model-turned-fashion designer married the controversial British businessman James Stunt in 2011, the wedding alone was thought to have cost £12 million.
Now divorced following an unsavory court case, Petra was also conned out of £1.6m in 2014 by the person charged with renovating her Sloane Lodge mansion.
8. Tamara Ecclestone, 34
Net Worth: $3bn
Model, socialite and TV personality, Tamara Ecclestone is the heiress to the fortune of her father, Formula 1 owner, Bernie Ecclestone, who made his billions buying the early television rights to the motorsport in the late 70s.
Now famed as much for his marriages to supermodels as he is for his contribution to the commercial growth of motorsport, both his daughters are notoriously spoilt, but are billionaires nonetheless, with Tamara, one of Chelsea's most famous residents, worth a cool $4b.
9. Athina Onassis, 33
Net Worth: $5bn
One of the last descendants of the famous Greek shipping billionaire Aristotle Onassis, the equestrian and socialite's net worth is around $5 billion. On her 18th birthday, she received a whopping $800 million.
However, the Greek media, which probably doesn't take too kindly to Onassis's extravagant lifestyle given the country's perilous economic state, has reported that the heiress has spent a lot of her inheritance and lost $100 million in a recent divorce settlement.
10. Margarita Louis-Dreyfus, 52
Net Worth: $9.5bn
Margarita Louis-Dreyfus is thought to be worth $9.5 billion, but her rags to riches story is even more impressive. Born into an orphanage in Russia, Margarita would meet her future husband, the French billionaire Robert Louis-Dreyfus, on a flight, and the two married soon after in 1992.
After his passing, Margarita.becamed an overnight French commodity giant, inheriting all her husband's assets and stocks, which consists of a portfolio of companies in more than 100 countries with 72 facilities. She is also the principal owner of the French Ligue 1 soccer outfit Olympique de Marseille having purchased the team for a reported 45 million euros.
11. Jane Lauder, 45
Net Worth: $2.9bn
Another Lauder to make the list is the 45-year-old Jane, who is worth an extraordinary $2.9 billion. The sister of Aerin Lauder, Jane is more actively involved in the company, serving as global president and general manager of the Estée Lauder, Origins, Ojon, and Darphin offshoot brands.
A hard worker from an early age despite her family's immense wealth, the Stanford graduate joined the company in 1996, where she has worked her way up and and been entrusted with over 20 million shares in the company. She is married to Kevin Warsh, the former governor of the U.S. Federal Reserve System.
12. Zhou Qunfei, 48
Net Worth: $9.2bn
Zhou Qunfei recently turned 48, a birthday that coincided with her becoming the second richest woman in China and more impressively, the world’s richest self-made woman.
Yes, with an estimated net worth of $9.2bn Zhou Qunfei's critics could be forgiven for thinking she inherited it all- but this is far from the case. Growing up, Zhou lived a life riddled with poverty, and things were made worse when her mother passed away when she was five-years-old. Yet despite the odds, Zhou defied logic and became one of the world's most successful entrepreneurs in a story of fairytale proportions.
Her wealth comes from her company Lens Technology, one of the leading suppliers of touch screens in the world. Lens Technology counts Samsung, Apple, and Huawei.as long-term partners. This immense success has afforded Zhou an awe-inspiring $27 million estate in Hong Kong.
13. Yang Huiyan, 37
Net Worth: $18.2bn
Yang Huiyan isn't your average 37-year-old- far from it. With an estimated net worth of $25.8 billion, Huiyan was never going to be someone that struggled to pay off their student debts. Raised in a wealthy household owing to the success of her fathers' lucrative company, Country Garden Holdings, Huiyan's wealth was gifted to her after her father transferred a large stake in the company to her name. Soon after her windfall, she decided to get more actively involved in the company and has since tried her hand at the Australian real estate sector.
However, most of Huiyan's wealth came after the company went public, which raised her inherited stake in the company by $410 million. At such a rate, Yang’s wealth has rocketed. In fact, in the first four trading days of the year, the Ohio State University graduate became an overnight billionaire. At one point, she became the richest women in China after only turning 26.
14. Sandra Ortega Mera, 50
Net Worth: $7.3bn
Sandra Mera is 50-years-old and worth $7.3 billion, making her Spain's richest women. Her fortune came when her mother passed away in 2013. Her father, Amancio Ortega Gaona, who owns the fashion high street giant Zara, is the fourth richest man alive.
Mera also has a small stake in her father’multi-billion dollar clothing company, Inditex.
15. Princess Charlotte Casiraghi of Monaco, 32
Net Worth: $5.7bn
Monaco is a principality weighted with wealth and prestige, and one of its most famous residents is the breathtakingly beautiful princess Charlotte Casiraghi, heir to her family's $5.7bn fortune. Going by the official title, Princess Charlotte Casiraghi of Monaco, the stunner, who also has French, American, Italian, English, German, Mexican, Irish and Swedish ancestry, is eighth in line to the Monegasque throne and is a household name in her native France.
What's more, Charlotte became the first woman to model for Gucci's cosmetic range, and with a face like hers, that's hardly surprising. A fan of sports, she is also a keen horse rider but maintains a girly love for all things fashion, something recognized by Vanity Fair who included Charlotte in their 2016 International Best Dressed list.
16. Lynsi Torres, 36
Net Worth: $3bn
The heiress to the In-N-Out Burger fortune, Lynsi sits on the board and is the majority owner of the fast-food chain.
As the president of the food chain and its majority shareholder Torres is worth $1.1 billion, and at just 35, is set to be the sole owner. However, because of the multiple kidnapping attempts on her life, Torres is rarely seen in public.
17. Yvonne Bauer, 41
Net Worth: $2.9bn
Heiress to Europe's largest magazine publisher, Bauer started as a print shop in Hamburg, Germany in 1865 and is now one of the biggest media empires in the world.
As one of the foremost publishing companies, Bauer's family media group own around 600 magazines, 400 digital publications and 100 television, and radio stations that air around the globe. But Yvonne isn't just riding high on the coattails of her family empire. Proving she has serious smarts, Bauer graduated with a degree in German philology.
18. Elizabeth Holmes
Net Worth: $0
A Stanford University sophomore, Elizabeth dropped out to start a company that made a blood testing kit with just the prick of a needle. After extensive media coverage, the company's value skyrocketed to $9 billion. Because of her 50% stake in the company, at only 31, Holmes became the youngest female self-made billionaire until it all came crashing down.
Today, Holmes is under federal investigation after exaggerating the success of her blood-testing kits. Many have claimed that it doesn't work at all. Her net worth has since dropped to $0.
19. Georgina Bloomberg, 35
Net Worth: $18bn
Georgina Bloomberg's surname is one of the most recognizable in America and certainly in the world of business. Georgina's father is Michael Bloomberg Bloomberg founder and former mayor of New York City, Michael Bloomberg.
Continuing the family tradition of excellence, the daughter of one of America's greatest ever businessmen is a dedicated philanthropist and author of a series of critically acclaimed young adult novels. If that wasn't impressive enough, Georgina is also a professional equestrian. Horses are a strong part of her life. As well as riding them professionally, Georgina also works for them and donates to Rider’s Closet and Animal Aid U.S.A. while also being a founding member of the Human Society of the United States.
20. Kylie Jenner, 21
Net Worth: $900m (expected to grow to $1bn+ within the coming months)
While Kylie Jenner isn't officially a billionaire yet, she is edging ever closer to the title of world's 'youngest ever self-made billionaire' after reports claimed she had made an astonishing $900million from her cosmetic company, Kylie Cosmetics.
The youngest member of the Kardashian clan only turned 21 in August and is already the wealthiest member of her family according to reports from Britain's Daily Mail newspaper.
In lieu of her astronomical success, Forbes profiled Kylie on their August cover which will focus on 'America's Women Billionaires'.
Once profits exceed $1billion, she will usurp Facebook's Mark Zuckerberg as the 'youngest-ever self-made billionaire,' a title the tech genius claimed at 23-years-old.
Uploading their upcoming August cover to their Instagram account, they wrote a caption which read, "Kylie Jenner is on track to become the youngest self-made billionaire ever, ahead of even Mark Zuckerberg, who became a billionaire at age 23.
"Find out how she built a $900 million fortune in less than 3 years. #SelfMadeWomen." Like we're all going to be able to do the same or something?"
21. Ariana Rockefeller, 25
Net Worth: $3.6bn
The name sounds familiar, doesn't it? Ariana Rockefeller was certainly born into the right family. Now in its fifth generation, the 32-year-old is one of the most recognizable faces of the family dynasty.
Often making various public appearances on behalf of the family company, Rockefeller spoke of the values her grandfather installed in her in an interview with NBC.
"The message was, a dollar is a dollar and to value that and to put a lot of value on hard work and the enjoyment of life, of course, and to give back," Rockefeller said to journalist Robert Frank.
22. Amanda Hearst, 34
Net Worth: $2bn
If you think Alexandra Rockefeller's family history is impressive, then you'll be even more impressed by Amanda Hearst's, whose great-grandfather is William Randolph Hearst, one of America's most famed tycoons and the muse behind Orson Welles’ cinematic masterpiece Citizen Kane. Keeping up the long tradition of the family's involvement in media and publishing, Hearst is now the Associate Market Editor at Marie Claire, one of the world's most popular monthly high-toned fashion and lifestyle magazines.
She is also an activist, and fashion model and the brains behind Friends of Finn, a charity which aims to expose the inhumane treatment of canine bred in puppy mills.
23. The Fredriksen Twins, 35
Net Worth: $10bn
Kathrine and Cecilie Fredriksen are quite the twins! Not only do they parade their fortune in fancy parties like most heiresses, but they are also actively involved in their father's multi-billion oil and shipping business.
With their family estimated to have a net worth of almost $10bn, the Fredriksen family have educated their children across Europe and also have a major influence in the fashion industry.
24. Anna Anissimova Schafer, 26
Net Worth: $41bn
Anna Anissimova Schafer is a very wealthy heiress who hails from Russia. While you may never have heard of her, go to Russia, and you will find most people know who she is.
Like many socialites, she has dabbled in modeling and acting, going onto appear in the movies The Whistleblower, Father of Inventions and Flutter.
25. Lucy Southworth, 39
Net Worth: $49bn
One-half of Google's brains, Larry Page has seen his search engine which began in the humble setting of his garage, turn into the world's most visited website. In time, a $30 billion fortune also followed, but Page seems richer because of his beautiful and intelligent wife, Lucy Southworth.
The blonde beauty graduated from Oxford University and is currently studying for a doctorate in biomedical informatics at Stanford University. The couple had dated for two years before they tied the knot in a small ceremony on Richard Branson's exotic Necker Island in 2007.
26. Ana Lucia de Mattos Barretto Villela, 45
Net Worth: $1.9bn
With her grandfather establishing one of the largest banks in Brazil, it eventually became a publicly traded company when it merged with a competitor.
Vilela owns a substantial amount of shares in a holding company that controls Unibanco Holding S.A., one of Brazil's most profitable banks.
27. Katharina Andresen, 22
Net Worth: $1.4 billion
Katharina Andresen is another billionaire on our list to have come from a wealthy Scandinavian family. But her reputation in her native Norway is far from perfect. In 2007, she made headline news when she was fined a hefty 250,000 kroner after being found guilty of driving under the influence of alcohol.
The Andresens inherited 42% of their father Johan's investment company Ferd. This generous stake in one of her father's many companies makes her the second youngest billionaire in the world, second only to her sister Alexandra, who is 21.
28. Alexandra Andresen, 21
Net Worth: $1.4bn
At just 21, Alexandra Andresen's $1.4bn inherited fortune makes her the world's youngest billionaire. As stated above, her 42% stake in the family-owned investment company Ferd allows her to play a pivotal role in the company's fiscal direction.
As well as overseeing the company's vast portfolio of private equity investments, Andresen also has a role in the hedge fund division. However, despite her stake, the brunette beauty stays away from the everyday running of the business. Instead, she has focused her energy on horses, becoming an award-winning horse dresser while also modeling for equestrian clothing companies.
29. Perenna Kei, 28
Net Worth: $1.3bn
With a degree in economics and finance from the University of London, Perenna holds an 85% stake in the real estate company Logan Property Holdings.
She is also in line to inherit her father's share of the company and portfolio alongside a family trust and other assets.
30. Miranda Kerr, 35
Net Worth $2.3bn
The 35-year-old Australian model and former Victoria's Secret Angel is one of the most decorate fashion models ever to walk a runway, so it isn't surprising that she has high standards, as evidenced by her marriage to Evan Spiegel, one of the co-founders of Snapchat. Now serving as CEO of the American multinational, Spiegel was officially named the youngest billionaire in the world in 2015.
But he made the biggest headlines last year when he married Kerr, who had previously been married to the British actor Orlando Bloom.