5, 4, 3, 2, 1. Mariah Carey drops the festive video for “Auld Lang Syne (The New Year’s Anthem),” the celebratory single off her holiday album Merry Christmas II You. Dressed in a lacy black dress and diamond jewelry, the pregnant diva sings and dances to the upbeat tune as fireworks explode against the night sky. Ring in 2011 with Mimi.