Katy Perry has revealed that despite her sugary-sweet persona, she can be 'a bitch' if she doesn't have enough sleep.
Despite being an A-List megastar, Perry claims that she still needs her beauty sleep to prevent her from being grouchy.

[uuid=4aa04a89-c17c-4be5-85b9-82ea94c81a55]SEE MTV'S KATY PERRY GALLERY HERE![/uuid]

TheRussell Brand later this year, also added that she and Russ like to do 'normal' things together, despite being one of the celeb world's hottest couples.

The Cheryl Cole at Simon Cowell's wedding because she think's it would be 'the perfect wedding present.'