Mariah Carey [1] stunned at her second annual All I Want For Christmas Is You concert at the Beacon Theatre in New York on Tuesday night, parading around the stage in a gorgeous, glittering white dress that made her look like a flawless ice queen. Her performances were accented by a giant, festive tree, some sparkling snowmen, and big heaps of presents. After all, nobody does Christmas like Mariah [2].