Beyonce Knowles: Slammed by Etta James

Beyonce Knowles: Slammed by Etta James

It seems that there's something scrappy in Hollywood's water! Just a few days after the very unexpected Faye Dunaway/Hilary Duff feud was ignited, another old guard/new guard battle is blazing.

This time around Etta James is kicking it old school -- and threatening to kick Beyonce's teeth in.

Now, with this, one might be under the impression that these ladies got on like gangbusters -- not only did Beyonce play Etta in 2008's "Cadillac Records", but Etta acted as a mentor to B and attended the December premiere.

Well, that's all in the past because Etta James is furious that Beyonce dared to sing her iconic "At Last" during the presidential inauguration.