Star Tracks
Spears rings in the New Year in Sin City. Plus: Hilary Duff, Mandy & Wilmer and more
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LOUD AND CLEAR
Also in Miami, Wilmer Valderrama pipes up as the host of karaoke night at Mokai on Thursday. Like his ex Lohan, Valderrama is in town to reign over New Year's Eve festivities, hosting a party at Mansion nightclub.
