We loved Beyoncé's portrayal of Etta James in Cadillac Records, and her rendition of "At Last" at the Inaugural Ball was def a hit, but there's one person who wasn't a fan of the performance -- Etta James has been badmouthing Beyoncé ever since! We totes thought they were cool after B so gracefully played her in the movie, but alas, we were wrong. "Your President... he had that woman singing my song. The great Beyoncé. I can't stand Beyoncé," Etta told the crowd at her concert last week in Seattle, according to TMZ. The movie was one thing, but taking credit for her song after the cameras stopped rolling must have put Etta over the edge. We hope they can work it out! Maybe a duet will smooth things over.