Katy Perry may have been revealing things about herself as she premiered new docu-movie Part Of Me last night, but fans nearly saw a lot more of their idol as she hit the town to celebrate.
Things got a little hairy for the singer as she struggled to keep her assets under control in her black prom dress.
![]()
She was partying with - get this - Robert Pattinson, Justin Bieber and Selena Gomez in the back of his $200,000 custom Mercedes Benz Mini Van.
Err, RANDOM.
![]()
The starry clan were seen arriving at the opening of Bootsy Bellows nightclub on Sunset Boulevard in West Hollywood for a night of fun.
But Justin and Selena were on the OJ, obv.
Waiting fans got a shock as the stars just kept on coming as they piled out of Justin's wagon one by one.
![]()
Earlier in the evening, Katy hit the red carpet with members of her family, before taking to the stage to perform.
> IN PICS: KATY PERRY: PART OF ME PREMIERE









The Huffington Post UK | By Ashley Percival Posted: 27/06/2012 16:27 Updated: 03/07/2012 22:02