Unlike her ex-boyfriend Justin Bieber, who lucked out by investing in Spotify in its formative years, Selena Gomez hasn't been as fortunate as a venture capitalist. In 2011, Gomez invested $750,000 in the postcard-creation app Postcard on the Run, which was also featured on ABC's Shark Tank show.

Her investment would be worth over $1.1 million (£810k) in today's money – but the app failed to take off and was shut down in October 2015.

However, it hasn't put Gomez off. She's since become both owner and investor of the renowned New York ice cream brand Serendipity, which has been operating since 1954.

The rich and famous who lost a fortune from their investments