Carrie Underwood may have natural singing ability, but it takes a bit of OCD for her to keep in such great shape.
"I'm slightly obsessive-compulsive about what I eat, more than I should be. I write down everything I eat," the American Idol champ dishes in Glamour magazine's January issue. "I started doing it last year. And in the last year is when I've gotten more healthy and lost weight."
When it comes to make up, the lovely, talented singer also takes great pains to look good:
"I have a giant makeup case, more makeup than any girl should have in her lifetime," she said.