Yeah Yeah Yeahs' fourth studio album, Mosquito, hits the shelves in 10 days. To remind us how good this upcoming effort could be, the trio stopped by David Letterman to perform its single, "Sacrilege," with a little help from the Broadway Inspirational Voices. It's a great performance, but the dopeness of Karen O.'s yellow bejeweled outfit definitely was a show stealer. See for yourself in the video above.