Tonight Sky Ferreira performed Night Time, My Time single "You're Not The One" on The Late Show With David Letterman. Dressed up for the occasion in sparkly tights and a power suit -- which she nervously fidgeted with through the first half of the song, maybe to keep her sheer top covered and the FCC happy, or maybe because a little nerve is part of her affect -- she gave rap hands a try and sounded mostly confident. At the end she threw the camera an icy glare, and then Dave shook her hand and wished her a happy Thanksgiving. Sky's self-assessment? "Omfg."