Carrie Underwood, Jennifer Lopez, Gwen Stefani take stage at AMAs (photo gallery)
The American Music Awards weren’t just about awards, of course. The three-hour show was packed with plenty of performances. Among those taking the stage: Carrie Underwood, American Idol judge Jennifer Lopez and The Voice coach Gwen Stefani. Jennifer opened the night with a performance of her song “Waiting for Tonight,” then did a dance number…