Lady Gaga Performs 'Happy Mistake' Live for First Time on 'Kimmel' - Watch Now!

Lady Gaga Brings Harley Quinn to Life with ‘Happy Mistake’ Performance on ‘Kimmel’

Lady Gaga Channels Harley Quinn With ‘Happy Mistake’ Performance on ‘Kimmel’

Chris Hemsworth Gives a 'Kimmel' Audience Member a Bowl Cut After Giving His Son a Similar Haircut