Pop star Katy Perry celebrated fiance 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 First online reported.
In a Twitter.com post, 25-year-old singer wrote, "In honor 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.