REVEALED: Details of Rihanna's top secret 24th birthday party

Chris Brown, Katy Perry and Bruno Mars were all at the singer's Beverly Hills bash

Rihanna threw herself a top secret 24th birthday party in Beverly Hills last night, and you'll never guess who was there? Her ex-boyfriend, Chris Brown.

The singer celebrated turning the grand old age of 24 by having a swanky bash at a Beverly Hills mansion and while all guests were forced to sign a confidentiality agreement form, one attendee ignored that and proceeded to reveal the details of the party on Twitter, as well as posting a pic of inside the bash.

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According to the source, celebrity guests at the party included Katy Perry, Bruno Mars and more controversially, Chris Brown, who was found guilty of assaulting Rihanna in 2009.

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When a fellow Twitter user asked if 'Chris and Rihanna had been canoodling,' the gossip-happy guest replied. 'LOL.....' So, make of that what you will!

Rihanna wore ripped jean shorts, black thigh-high leather boots with a white corset top and had her new blonde hair pulled back into an up-do at the party.

Throughout the night, RiRi and her chums sipped on bottles of Armand de Brignac Champagne, including a large Methuselah, which is equivalent to eight regular sized bottles.

Sounds like quite a soiree!

Are you happy that Rihanna is spending time with Chris Brown again? Or do you think it's a bad idea? Let us know in the comments box below...

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