The troubled star is said to have disrupted a performance of Cinderella on Saturday night by heckling the cast.
She is later alleged to have launched a physical attack on a member of staff at the theatre in Milton Keynes, Bucks.
The Back to Black singer was said to have shocked children and parents by shouting 'He's f ****** behind you' during the performance and yelling out 'F*** Cinders, Prince Charming, marry me".
Refusing to sit down, she also branded the Ugly Sisters 'bitches", The Sun reported.
According to the paper, she later launched herself at front-of-house manager, Richard Pound, allegedly pulling his hair, punching him and kicking him between the legs.
Her outburst was said to have exasperated stars of the show, including Fairy Godmother Anthea Turner, comedian Bobby Davro, playing Buttons, and actor Mickey Rooney, as Baron Hardup."
Hold up. A couple of things: Mickey-Bloody-Rooney is still alive and performing? That's a good one.
And for those of us who really know the story of "Cinderella"...the ugly step-sisters were bitches.
LEAVE AMY ALONE!!!!