Las Vegas, October 25 – Acid reflux victim/pop star Ashlee Simpson had the nerve to perform on live television only 48 hours after her mortifying Saturday Night Live debacle, when Ashlee’s voice began wafting from TV sets across the nation, but her lips were not moving on screens. Ashlee took her lumps with humor, joking with the Radio Music Awards audience on Monday that her band began playing the wrong song. Anyway, producers swear that Ashlee was singing for real at the awards, which were broadcast live on NBC.

At one point, we bumped into Ashlee and sometime-boyfriend Ryan Cabrera getting off an elevator, in the midst of a heated argument. She didn't seem to be lip-synching.

Rod Stewart’s daughter, Kimberly, was flashing around a diamond engagement ring from her fiancé, rocker Cisco Adler. Reportedly, Adler popped the question and presented her with the ring in the limo on the way to the Radio Music Awards ceremony. How romantic can you get?

Another highlight: original coochie-coochie girl Charo was in the crowd, but we didn't get the chance to ask her about her upcoming projects.

Usher, Linkin’ Park, Beyonce and Tim McGraw were some of the winners, recognized for having top-playing radio songs. Destiny’s Child, Elton John and others wowed the crowd with performances.

Photos by Jen Lowery