What has Rihanna got planned for Katy Perry’s hen party?

NEW YORK - JULY 28:  Singers Katy Perry and Rihanna, with Sugar Factory Couture Lollipop, attend a post concert party at The Griffin on July 28, 2009 in New York City.  (Photo by Amy Sussman/Getty Images for The Griffin)Katy Perry is in for a good night with Rihanna planning her hen party.

Speaking about what might happen on the night, Katy said nervously: ‘I’ll probably end up shitfaced in an alley wearing a penis hat.’

25-year-old Katy is set to marry actor Russell Brand, 35 – but won’t be dieting frantically to fit her dress.

‘My favourite junk food is Taco Bell, but every once in a while I’m gonna eat a Double Double burger too.’ she said, according to the Daily Star.