Jay Z started off "hustling", but now commands an empire worth more than £300 million thanks to being head of Rocawear clothing, and then investing in everything from nightclubs to beauty products. He's also part-owner of a basketball team and is one of the head honchos at Budweiser. Nice one!
Ashton Kutcher might not strike anyone as the smartest tool in the box, but he's much cleverer than his Dude Where's My Car character would make you think. He invested early in Spotify, Skype and Airbnb and is also one of the highest-paid men in TV thanks to taking over from Charlie Sheen in Two and a Half Men.
Jordan, or Pwicey, as she now goes by, used to be known for her boobs. Now she's known for her brains. Well, kind of. Her brand is so big that she's got books, lingerie, an equestrian clothing range, an electrical hair care range and even jewellery with her name on. Add to that the reality TV deals, and it's no wonder she's worth more than £30 million!
Justin Timberlake turned himself into more than a curly-haired ex-boybander when he started investing his millions into bigger ventures: restaurants, tequila, a record label, a golf course, a clothing line and, infamously, a whole lotta Myspace. And those films still bring in the dollars...
More than just a pretty face, Paris Hilton turned sex-tape-related-fame into a massive business. Even though she's due to inherit billions from her family's hotel business, she became a brand in her own right by making TV shows, books, films, bags, clothes, hair care products, racing teams, watches and shoes. Oh yeah, she's also on her fifteenth perfume.