Taylor Swift impressed ex-beau Harry Styles with a smoking performance of "I Knew You Were Trouble" at the Brit Awards Wednesday night.

Taylor started out in a white wedding gown before stripping down to a sexy black bustier in the middle of the song. At the afterparty, Harry weighed in on T's performance, saying, "She always puts on a good show."

After the show, Taylor was seen dancing the night away with Frank OceanCarey MulliganMarcus Mumford and Ellie Goulding.

Taylor Swift photo gallery