John Legend & Chrissy Teigen: Vegas New Year's Couple!
The 35-year-old musician hit the stage soon after to perform for the crowd.
“Vegas! Tonight Iâ€™m counting down to 2014 and performing at @hazenightclub inside @arialv. Come celebrate the New Year with me!” John tweeted earlier that day.
The month before, John and Chrissy dressed up as Super Mario Bros. characters for her birthday party in West Hollywood, Calif.