Taylor Swift was the opening act for the 55th annual Grammy Awards on Sunday night.

The 23-year-old pop superstar sang her nominated song "We Are Never Ever Getting Back Together" at the Grammys. Swift teased her Grammys performance in the days leading up to the big event. She rocked a bedazzled white top hat and tails. Her over-the-top performance included men on stilts, ballerinas, and dancers dressed as rabbits. She ended the song with the line "So he calls me and goes, 'I still love you...' And I'm like, 'I'm sorry, I'm busy opening the Grammys.'"

"I think you should perform the song that's nominated," she told Ryan Seacrest on his radio show. Swift's "We Are Never Ever Getting Back Together," the lead single off her 2012 album "Red," was nominated in the Record of the Year category. ("Red" itself wasn't eligible for Grammys nominations, so expect to see Swift dominate the 56th annual Grammy Awards in 2014.)

Prior to performing on the Grammy awards, Swift was a little nervous.

"Oh my god, it's Grammy week, it's so hectic," she said to Seacrest. "I have a lot to plan for with the opening performance and I'm just really hoping all the pieces come together this week. Because this is when it really gets really crazy, but it's all very exciting too."