Taylor Swift blew away the audience at the 2012 BRIT Awards. Her performance of "I Knew You Were Trouble" had all the elements of a showstopper - pyrotechnics, outfit changes, a full band and dramatic dance sequences. Now, watch the entire performance live at brits.co.uk. You can enjoy Taylor's performance alongside many others like Mumford and Sons and Ben Howard, along with amazing red carpet interviews, backstage clips with Zane Lowe and the best highlights from the show.