Duff: 'I Was Too Skinny'

[Brian Damage]

Pop singer/actress Hilary Duff was so impressed with the results of her 'dessert or bread' diet, she went crazy and accepts she lost too much weight.

The "So Yesterday" singer stunned fans late last year when she appeared at a series of parties and launches looking waif-like and skinny.

The backlash made Duff take a long hard look at herself in the mirror--and she didn't like what she saw.

She says, "I made a conscious choice to get in shape. I've always been a junk food eater, but I started paying more attention to what I put in my body and cut out foods like pizza, chicken fingers and French fries.

"If I knew I'd want dessert one night, I wouldn't have bread that day. If I wanted to eat bread, I wouldn't have dessert.

"Seeing how well it worked motivated me to keep going, but I hit a period when I got too skinny. I wasn't too obsessed with it, but I did learn that there have to be days when you just don't think about it."