Katy Perry posts bizzare topless photo online

Updated: Jun 05, 2010, 14:14 PM IST

London: Pop star Katy Perry celebrated fiancé Russell Brand`s 35th birthday and the release of his new movie by posting a quirky, doctored `topless` photo online.

The `I Kissed A Girl` hitmaker photoshopped her face onto Brand`s topless shot that graces the cover of the new issue of Rolling Stone magazine, Female Firt online reported.

In a Twitter.com post, 25-year-old singer wrote, "In honour of @rustyrockets birthday; film release! MY Rolling Stone Cover!" and posted the bizzare picture as `Twitpic`.

Brand, who turned 35 on June 4, is set to tie the knot with Perry in October this year.