Robert Pattinson didn't want to party with Katy Perry and Justin Bieber

Katy Perry has revealed how she roped Robert Pattinson in to joining her on a night out with Justin Bieber and Selena Gomez

Robert Pattinson got stuck on a night out with Katy Perry, Justin Bieber and Selena Gomez, the Part of Me singer has revealed.

Robert Pattinson, Katy Perry, Justin Bieber and Selena Gomez were photographed together on a night out in Los Angeles last week.

The unlikely group of friends started at the super-exclusive Chateau Marmont before going on to David Arquette's new nightclub, Bootsy Bellows.

ROBERT PATTINSON PARTIES WITH KATY PERRY AND JUSTIN BIEBER

But Katy has revealed that Robert didn't know what he had let himself in for when he arrived to celebrate the success of Perry's premiere of new movie Part of Me.

'We were just hanging out, I love Selena and we have a lot of mutual friends and Justin’s always been so nice to me and Robert somehow got stuck in all of this!' she told thehothits.com.

The 27-year-old singer also went on to say that despite the late night, the showbiz group didn't really let their hair down.

She said: 'There wasn't really any partying, because when I party I party! I party like Andrew W K style. I crowd surf!'

Wild.

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