Jessica Simpson Rocks the Rockefeller Tree Lighting

Lending her vocals to a very special occasion, Jessica Simpson was spotted singing at the 2010 Rockefeller Center Tree Lighting Ceremony last night (November 30).

The “Come On Over” songstress, who was joined by fiancé Eric Johnson, looked lovely as she took the stage at the Midtown Manhattan affair, sporting a black coat and gloves.

During her performance, Jessica gave a fabulous tribute to American troops overseas by singing “I’ll Be Home for Christmas.”

And Ms. Simpson wasn’t the only diva in attendance - preggers superstar Mariah Carey also participated in the festivities.

Enjoy the pictures of Jessica Simpson and Mariah Carey at the Rockefeller Center tree lighting ceremony (November 30).