She's got guts, you gotta give her that! Taylor Swift stepped out on stage sporting a matronly white gown to perform her hit, I Knew You Were Trouble. Not exactly the super sexy revenge outfit you'd expect when you know you're about to perform in front of your ex, right? Well that was just a tease because halfway through her performance, she stripped out of her dress to a much more risque black satin and lace number. So what did Harry think of the performance? You'll have to watch to find out!
