Katy Perry has revealed that she refrains from imitating stage acts like Rihanna due to body worries.
The 29-year-old former wife of Russell Brand has claimed that she can't do such acts as her body has started to fall apart and the cellulite on her body will be visible, the Daily Express reported.
She added that if she had a younger body like that of Miley Cyrus or Rihanna, maybe she would have been "sprawling out there a little bit more".