There's never a dull moment in the world of divas. According to media reports, Etta James was less than pleased with Beyonce performing her hit 'At Last' at President Barack Obama's inaugural ball.

The 27-year-old singer, who portrayed James in the Chess Records biopic 'Cadillac Records ,' performed the classic for Obama and his wife Michelle's at the president's first Neighborhood Ball.

"You know, YOUR President, the one with the big ears -- he ain't my President -- had that woman singing for him at his Inauguration," James said during a concert in Seattle. "She's going to get her ass whooped. How dare Beyonce sing MY song that I been singing forever. Now I'm going to sing it for y'all."

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While James sounds quite perturbed, Beyonce has had nothing but nice things to say about the legendary songstress. Beyonce praised the singer and gushed about James' "amazing voice" and credits the singer for giving her the motivation to take "risks" in an exclusive interview with AOL Music.

"I know I'm very private but I always reveal myself on the stage and I always reveal myself in my music," Beyonce said during her AOL Music Sessions taping. "I'm really proud of it and I feel like it's the best work I've done. I know you always feel that way but I really feel like I've grown tremendously and I feel so free and I have Etta James to thank for that."

Beyonce has not responded to James' recent comments.