Stars' Most Memorable Performances of All Time

Amy Winehouse

Before getting boos from the crowd at the St. Lucia Jazz Festival in the Caribbean in May, the soulful singer reportedly forgot the lyrics to her own songs, flashed her panties, and had trouble standing up. "She kept ordering roadies to bring more drinks, despite appearing to be on the verge of collapse," a witness said of Winehouse, who has struggled with substance abuse. Last year, the star even punched an audience member.

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