![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzgPIxxNEt51tudDS9wnq9gUM7noSbZQSHazNGSjU2F9OQeM-ilOuiEc5WGrsEXe80XibNS3ImvJHL4puTOfJYghXXVXRR9rh1matYdlrJjZHzLK_X1322AXJulMQpjPFSk6DtaisXPBI/s320/jennifer-lopez-1152x864-22693.preview.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhaLI_QaRm1D1rybA_Ina0BTk8FD88BYGBqDBj_i6W5IqDxfn5A6t3bFDlrGUGczMXL6nEqjH6NeqErdK35xN1q0yE4X_RgctJAuUdySgY2i88TezcOMJSVMI5t0nhhgwJC6XvyWC5aSp4/s320/med_jennifer_lopez_artist_photo11.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTNgIrXq5zbVBdgAuQcXy7VbMavfeQbPpLXZrSPbrLqqciWuOXn0psXw6PavDlgV4MvvYgLkVcIKMiiIXfRd5TkFHnf8CGcnhDxWOEbNDvFIa2hVNPRuIyuEogofHKAIQYR336mr7Kzlg/s320/102356_2009-mtv-video-music-awards-jennifer-lopez-looking-lovely.jpg)
Jennifer Lopez plans to include fireworks and an on-stage costume change in her performance at the American Music Awards. "American Idol" runner-up Adam Lambert will incorporate leather and chains into his.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.Lambert, 27, said he's eager to see how the star-studded crowd responds to his provocative performance, a sexed-up.