Taylor Swift Performs “I Knew You Were Trouble” At The 2012 AMAs: Watch

Taylor Swift has performed “We Are Never Ever Getting Back Together” so many times it must be old hat — but the country-pop superstar surprised fans tonight at the 2012 American Music Awards when she instead turned out a blockbuster rendition of her new single “I Knew You Were Trouble.” Looking more like a true pop star than she ever has before, the theatrical set, which featured a jaw-dropping mid-song costume change, was high-drama, mesmerizing and heavy on the hair-flips — and as any pop diva knows, that’s the true secret to success for any showstopping performance. Watch up top.