Taylor Swift held court as the headliner in Times Square New Years Eve:
Also there, hosting the festivities, were Jenny McCarthy and Ryan Seacrest:
Lady Gaga performed with legendary Tony Bennett at the Cosmopolitan of Las Vegas on New Years Eve:
Khloe Kardashian hosted the New Years Eve at 1OAK Las Vegas presented by Dom Perignon and Grey Goose vodka:
Sofia Vergara and fiance Joe Manganiello rang in New Years Eve at Planet Hollywood Resort & Casino. Also celebrating there? Arnold Schwarzenegger, Heather Milligan, Miley Cyrus and Patrick Schwarzenegger:
Usher hosted E11EVEN Miami’s NYE Celebration. Here he is snapping selfies with Bow Wow:
R&B recording artist Miguel serenaded the crowds (and his beautiful model/actress girlfriend Nazanin Mandi) at the Hyde Bellagio Las Vegas New Years Eve celebration: