She long ago proved herself a worthy idol

Revelers outside Sin City hot spot Tao at the Venetian started screaming half an hour before the countdown to New Year’s. The cause? Host 1. Mariah Carey’s arrival. Fans got another treat: the debut of her new single, “Migrate.” After toasting the crowd, which included hip-hop couple Kelis and Nas, Carey was showered with sparklers and a cake, as her entourage, including Randy Jackson, joined in.