VIDEO : Mariah Carey Really Doesn't Know Who Jennifer Lopez Is?

Los Angeles - Mariah Carey "still" does not know who Jennifer Lopez is. The Hero singer has insisted that she remains unaware of the Maid in Manhattan actress and fellow pop diva's existence, as she repeated the same phrase she had previously used to discard the Waiting for Tonight hitmaker 10 years ago. Asked by TMZ about her previous dismissal of her chart rival, Mariah said: "I still don't know her." We've met many times." Despite Mariah's denials, Jennifer caused a stir when it emerged she had attended almost every performer's Las Vegas residency - except Mariah's.