Lopez is ready for AMA stage with a little nervous

Lopez and Lambert will be among more than a dozen performers at Sunday's ceremony, and they took time out Thursday to perfect their performances.Lopez is in top form, but she's still a little nervous. She'll be singing a song fans have never heard before and performing live on TV for the first time in years. She's set to perform "Louboutins," the first single from her new album, "Love?" due in stores next year. Flanked by backup dancers, the 40-year-old entertainer busts out her Fly Girl moves in a number that begins in a boxing ring and ends in the audience. Famed sports announcer Michael Buffer is in the act, too. She might be one of music’s biggest stars — but Jennifer Lopez still gets nervous!...........more