Paris Hilton made an embarrassing boob during a sexy photoshoot on Malibu Beach on Wednesday when she popped out of her swimsuit.

The socialite � who has just recorded her first album � was writhing about on the sand in a skimpy swimwear when she �inadvertently� pulled the costume down to reveal her left breast.

However, Paris � who famously starred in her own sex video with ex-boyfriend Rick Soloman � managed to laugh the incident off.

An onlooker tells the Daily Mirror, �Nobody could take their eyes off her, especially when the swimsuit slipped down to reveal a little more than necessary. But she found the whole thing hilarious.�