It wouldn't be an Amy Winehouse show if there wasn't any drama, and the singer's set at the weekend's Glastonbury festival brought plenty of it.

Winehouse was performing her hit 'Rehab' from the pit on Saturday night, when she appeared to elbow, then punch a member of the audience.

Festival organiser Michael Eavis later said that she was reacting to someone in the audience groping her boob, and it was in self-defence.

"It was a shame what happened at the end, someone put their hands on her boob," he said. "Come on! That's not on. He deserved it, he put his hands on her breasts!"

A video of the incident can be seen below.