Amy Winehouse Throws a Punch at a Fan

Amy Winehouse reached out to her audience at the Glastonbury music festival on Saturday– long enough to take a swing at one fan.

The troubled singer took the stage at the concert in England, sporting a glittery minidress and her signature ink-blank beehive.

At the end of her hour-long set, Winehouse climbed down into the pit and had a scuffle with a fan.

Video footage shows the singer swinging her arm repeatedly at a fan as she sings “Rehab” – and not missing a beat. It’s not clear what started the scuffle, but witnesses say a fan tried to grab Winehouse.

Last week, Winehouse, 24, shocked fans performing at a birthday concert for Nelson Mandela.

The performance came just after she was hospitalized. Her father says she developed emphysema from smoking cigarettes and crack cocaine, although her spokeswoman has said Winehouse only has pre-emphysema symptoms.