Pete Wentz is suffering from insomnia.
Writing on his Twitter page, Pete said: "sometimes late at night i realize this planet doesnt belong to me. i also dont belong to it. i wish i had recycled it more and me less.
"Can't fall asleep. No "bodyguards/nannies" in sight. Mission possible. We need to start an insomnia club. Nobody that does uppers need apply. (sic)"
Pete is not the only celebrity to suffer from sleepless nights.
She wrote on her Twitter page: "I just finished working out. Whooo! Quite naturally, 'its 5am and I still can't sleep'(sung like 'crybaby' from 'Rainbow' 99)lol Who's up?
"Nick is too cute when he's sleep! I wish he didn't have to work tomorrow so he could help me sleep all day and I could sing all nite (sic)!"
Robbie Williams often finds it difficult to drop off, especially after a live show.
A source said: "Rob has a problem sleeping and it's very hard for him to know what to do after he has performed."