Joining an all-star line-up including Justin Bieber, One Direction, Ne-Yo, and The Wanted, Taylor Swift performed at the Z100's Jingle Ball 2012 presented by Aeropostale at Madison Square Garden on Friday (December 7).
The country crooner arrived in a chic, sleeveless, and short black dress before shimmying into a sparkly top and high-waisted red hotpants for her time on stage.
After knocking out hits like "Love Story, and "You Belong to Me," the 22-year-old sang "I Knew You Were Trouble," rumored to be inspired by her new flame, One Direction's Harry Styles.
Prior to the big night, Taylor got a boost from the radio station as she shared on her Twitter account, "Just got in the car and @z100NewYork is playing 'I Knew You Were Trouble' !! Yes!!!!"