Taylor Swift is doing four sold-out shows at the Staples Center in Los Angeles this week, which means by Sunday, she'll hold a new record -- becoming the solo artist with the most sellouts at the arena.
Taylor Swift was playing the Staples Center in LA on Monday night, and Cher Lloyd just happened to be in town. So Taylor decided to invite her to her show, and perform. So the two of them performed Cher's hit song "Want U Back" for the crowd.