'American Idol' made Paula Abdul gain weight

"The Biggest Loser" and "Dancing With the Stars" have successfully slimmed contestants down, but can "American Idol" make you fat?

Well, sorta. That's what Paula's saying. And we all know that what Paula says is gold.

The former "Idol"  judge was looking all svelte and toned in a black fishtail gown, prompting reporters at the American Music Awards backstage Sunday to ask her to divulge her secret.