*A female fan being serenaded by Usher at a New York City concert lost control of herself and accidentally kicked him in the face.  [Scroll down to watch.]

The crooner brought the frenzied fan onstage Monday night for a serenade of his sensual song “Trading Places” at Madison Square Garden. He sat her on a couch while he caressed her.

Then, after they changed positions, she swung her right leg across his body in an attempt to straddle him – delivering an unintentional roundhouse kick to his nose with her stiletto boot heel.

The fan tried to smooth things over by massaging Usher’s face, but there was no need: Usher wasn’t hurt and cracked a joke about it.

Below, kick comes at 2:58.