Alicia Keys dazzled fans when she appeared in a sparkling ... a crop top to show off her midriff” and an open neckline to highlight her collarbones. “It opens things up, lets the look breathe ...

Alicia Keys made her appearance by first tickling ... while it included a darker red corset-style midriff. Usher, who wore a single bejeweled glove, possibly as a tribute to Michael Jackson ...