Here are the lavish ways the world's youngest billionaires spend their money

Being someone who is in their twenties I can tell you that life is tough. Low wages, little job prospects and sky-rocketing rent prices mean that the future, right now, for my generation, looks pretty bleak. However, luckily for some, they don't have to experience the travails that the majority of 20-somethings have to. You see, unbelievably, there are people in their twenties who are not just millionaires, but billionaires.

Yep, while you tuck into you packet noodles and glass of own-brand soda, these kids are living it up. Whether it's going on holiday, owning copious amounts of horses or watches that cost more than half of your yearly salary, these guys are certainly living the "life of Riley." But who are they and how did they make their billions? Well, take a look below.

Alexandra is the world's youngest billionaire, with the 21-year-old having a net worth of $1.3 billion thanks to her father Johan Andersen's work in investment banking. She's a keen horse rider and owns four horses as well as competing in Norway's dressage team. Like many 21-year-olds, Alexandra enjoys going out, travelling and spending time with her dogs. Her fortune came when her father transferred most of his funds to her and her sister in 2005... which leads us to our next person on the list.

22-year-old Katharina, like her sister, is also a huge horse-riding fan, but not as much as her sister. The Norwegian enjoys splashing the cash on her fashion, with her owning several expensive bags and limited edition shoes. Obviously, someone who enjoys materialistic goods, Andresen recently spent $9,000 on her first Rolex and was more than happy to display it on Instagram.

Coming in at number 3 is Gustav Magnar Witzøe, who is worth an eye-watering $1.8 billion thanks to having a 47% share in his father's salmon company, Salmar. Gustav was gifted the share by his father Gustav Witzøe in 2013. The billionaire is known for his love of flaunting his wealth, he's into high-fashion, loves sneakers and also enjoys cigars. He can regularly be found travelling the world, playing golf and getting his collection of tattoos updated.

John Collison is the youngest self-made billionaire on the list, with the 27-year-old being worth a cool $1.1 billion. The Irishman made his money through founding the payment company "Stripe" alongside his brother in 2010. Collison is a great lover of the outdoors and spends his time flying planes, partaking in fun-runs and hiking mountains.

By far and away the most wealthy billionaire on this list, Evan Spiegel is the 27-year-old founder and CEO of "Snap." With a net worth of $4 billion, it's estimated that he officially became a billionaire in 2014, when Snapchat's net worth reached $10 billion. While Evan keeps his private life, well... private, his wife, Miranda Kerr, sometimes features him on her social profiles. The two got married in July last year and banned guests from posting any photos from the ceremony. In terms of what he likes to do with his cash, Evan is known to enjoy flying helicopters and flower arranging.

So there you have it. If you ever want to feel any worse about your current predicament, remember that there are people your age or younger who are billionaires. Billionaires. Not even millionaires. These people are billionaires.