Taylor Swift debuted her rockin' new tune, "I Knew You Were Trouble" on Sunday's American Music Awards, and she debuts a totally new look in the song's upcoming video. Ditching her girlie-girl image, the music superstar sports sneakers, cutoff jeans, a baggy shirt and leather jacket in the clip. And check out the new hairdo! Her normally long locks are cut to her shoulders, with half of her hair dyed pink. But it's unclear if that's the singer's real hair or a wig. The photo above was taken on Nov. 18, just after the AMAs, which saw a long-haired Taylor perform the song. So if that is her own hair, she got a quick cut after the show!

The "I Knew You Were Trouble" video was shot in Los Angeles, with Reeve Carney as Taylor's co-star. The 29-year-old actor is best known for his lead role in the Broadway musical, "Spider-Man: Turn Off the Dark."

"I Knew You Were Trouble" is the third single released from Taylor's latest album, Red, which has sold almost three million copies in just three weeks.

Flip Through Photos of Taylor's Fashion Evolution

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Watch a Video on Taylor & Other Best Dressed Stars at the AMAs

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