EXPERIENCE AMERICARockefeller Center Christmas tree lighting signals holiday seasonUSA TODAYThe 87th Annual Rockefeller Center Christmas tree lighting Dec. 4 drew a host of celebrities. Billy Porter and Idina Menzel performed together. Click ahead to see who else was there to warm up the crowd.Seth Harrison, The Journal News Via USA TODAY NetworkJohn Legend's image was projected on a large screen at Rockefeller Center as he performed during the two-hour "Christmas in Rockefeller Center" extravaganza.Seth Harrison, The Journal News Via USA TODAY NetworkRockefeller Plaza was packed with people waiting for the annual tree lighting.John Lamparski, Getty ImagesNe-Yo brought holiday cheer.Seth Harrison, The Journal News Via USA TODAY NetworkHe was backed by a choir.Seth Harrison, The Journal News Via USA TODAY NetworkJordan Fisher and Julianne Hough kicked up their heels.Seth Harrison, The Journal News Via USA TODAY NetworkThe a cappella group Straight No Chaser performed.Seth Harrison, The Journal News Via USA TODAY NetworkThe crowd was packed tight enough to keep the cold at bay.John Lamparski, Getty ImagesSinger/actress Lea Michele looked cozy in her fuzzy red coat.Seth Harrison, The Journal News Via USA TODAY NetworkCountry singer Brett Eldridge also was projected on to a large screen as performed from the roof of Rockefeller Center.Seth Harrison, The Journal News Via USA TODAY NetworkMenzel also performed a few numbers on her own.Seth Harrison, The Journal News Via USA TODAY NetworkPeople have a birds eye view of the Christmas Tree being lit at Rockefeller Center during the Rockefeller Center Christmas Tree Lighting Ceremony in Manhattan Dec. 4, 2019.Seth Harrison, The Journal News Via USA TODAY NetworkNew York City Mayor Bill De Blasio, left, was among those who pressed the button to light up the Christmas tree.Seth Harrison, The Journal News Via USA TODAY NetworkAt the end of the night, the crowd was rewarded with the tree, complete with more than 50,000 lights.Seth Harrison, The Journal NewsThe tree is topped with a 900-pound star made of more than 3 million Swarovski crystals.John Lamparski, Getty ImagesFeatured Weekly Ad