The REHAB singer was appearing at the Eden Project this week - her first gig for two weeks after claiming "exhaustion" - when she dashed off stage during her first few songs.

In front of a frustrated and confused crowd, Amy then returned and proceeded to slap herself around the face and bash the microphone on her head. According to the Sun, she then forgot the lyrics to her songs, spat into the crowd and mumbled swear words. - more on this story