Mariah Carey still doesn't know her! The shade queen herself appeared on Wednesday's episode of Watch What Happens Live with Andy Cohen, and addressed her viral interview discussing Jennifer Lopez more than two decades ago. If you have no clue what we're talking about, in 2003, Mimi appeared on German talk show Taff, where she was asked about the Selena star. You know that phrase, "If you don't have anything nice to say, don't say anything at all"? Well, those are sorta the vibes she gave with her response. Because all she said was, "I don't know her" with a smile across her face.