Leona Lewis Might Want Lessons From Lennox!

Leona Lewis has been punched during an promotional book signing for her new book "Dreams".

"Leona was the victim of an unprovoked attack," the singer's rep said in a statement. "The police were called immediately and medical attention has been sought. Leona is understandably shaken and apologizes to the fans she was unable to meet and complete signings."

Photographs show Lewis leaving Waterstone's bookstore with sunglasses on and a pained expression on her face. Reports indicate she was taken to a doctor as a precautionary measure.

An eyewitness at the store told the BBC, "[Lewis] was running out with her hand over her eye, and I just saw a man on the floor. Suddenly the security all jumped on him and they were trying to pull him out and he was just laughing. He thought it was funny."

I bet she didn't imagine "a moment like this" happening! (sorry I had to do it)