"How I lost 20 pounds": American Idol winner Carrie Underwood reveals her very doable strategies for slimming down and getting healthy

We all know Carrie Underwood's story by now: small-town Southern girl makes it big on American Idol, the most popular show on TV. What many of us don't know is that American Idol's fourth-season winner was gaining more than just fame while the show was airing: Carrie put on 20 pounds. "It was crazy," says the now-slimmer star, relaxing in the lounge of a bowling alley in New York City with her tiny terrier, Ace, snuggled up next to her.