Stars line up for tree-lighting special

NEW YORK, Nov. 5 (UPI) -- Mariah Carey, Sheryl Crow and Josh Groban have signed up to perform at this year's Christmas-tree lighting ceremony in New York's Rockefeller Center, NBC said.

Also slated to sing at the Nov. 30 event, which is to air on NBC, are Jessica Simpson, Susan Boyle, Annie Lennox, Katherine Jenkins, Charice, Kylie Minogue and Jackie Evancho.

The 78th annual holiday show will feature a tree that is 74 feet high, 40 feet in diameter and weighs 12 tons, NBC said.