Nelly and Nicole Scherzinger kicked off Labor Day weekend with a sweet celebration in Sin City. After indulging in treats at the Sugar Factory American Brasserie at Paris Las Vegas, the rapper and “X Factor” judge headed to Chateau Nightclub & Gardens. Nelly performed crowd favorites like “Hot in Herre,” while a red-hot Nicole danced behind the DJ booth. Ciara, will.i.am, and Diddy will also host events in Las Vegas over the three-day weekend.