Britney 'Cuts Out The Calories To Slim Down'

Britney Spears has had to give up her favorite treats in order to get down to a slim size again.

The singer, who has often been criticized about her fluctuating weight, was reportedly put on a 1,600 calories a day diet and told to resist her cravings for croissants in order to tone up for her 'Circus' tour.

"It was a really tough decision for Britney. Room service croissants are one of her favorite things in the whole world," a friend told Bang Showbiz.

But despite her diet and constant nights of dancing on stage, Britney still isn't happy with her figure.

"Britney was at the swimming pool the other day and she kept lifting her legs and poking at her thigh area. And then she said, 'Would you look at this? I dance my ass off for a living and I can't get rid of these thighs.'"