Jamie Kennedy, Macy Gray and Mena Suvari celebrate the New Year at Grauman's in Hollywood; Kanye West, John Legend, Chrissy Teigen and Lance Bass help Kim Kardashian count down to 2013 at 1 Oak Las Vegas; Carmen Electra and Derek Hough celebrate New Year's Eve at Vegas' The Act nightclub; the Red Hot Chili Peppers rock New Year's Eve at The Cosmopolitan in Las Vegas; Nicki Minaj rings in 2013 for fans at PURE nightclub; Jeremy Piven joins Common on stage for the New Year's Eve countdown at Hyde Bellagio—from L.A to Vegas, get the full rundown on where stars were ringing in the New Year in this edition of Last Night's Parties.