After a four year hiatus, VH1 Divas officially came back last night (September 17) with a new crop of fresh, young, and talented female artists. Host Paula Abdul was in fine form, performing a medley of hits at the Brooklyn Academy of Music in New York City. Even despite the tumble , the former American Idol judge appeared coherent for the most part. After a wardrobe and wig change, Paula did her best impersonation of her Idol replacement Ellen DeGeneres . “Why you all staring