Lady Gaga Brings Harley Quinn to Life with ‘Happy Mistake’ Performance on ‘Kimmel’
Lady Gaga proves she's no diva as she gets down on the ground to take selfies and sign autographs for fans as she's mobbed outside Jimmy Kimmel's TV studios
Lady Gaga says she 'loves' fiancé Michael Polansky 'so much' as she reveals 'everything changed' when they met
