Watch Selena Gomez and her friends dance to Taylor Swift's "I Knew You Were Trouble." after the jump!
Selena and her pals' video homage to "I Knew You Were Trouble." starts all like,"hi we're just goofy friends singing along to one of our favorite tunes." Then it turns in to a full-on, flawlessly choreographed music video -- the ladies totally take on a girl band persona (complete with endless smizing, obvs).