Marc Anthony sings, J.Lo shakes it on American Idol finale

American Idol went Idolo Americano on Wednesday night's finale when lovebirds Marc Anthony and Jennifer Lopez teamed up to perform Aguanile from the movie they did together, El Cantante.

Well, she didn't sing -- she just let her trademark booty do the talking.

She couldn't contain her excitement after the finale aired after she noticed that Aguanile was a trending topic on Twitter.

"Look baby!!! @MarcAnthony!!!!!! #aguanile on @AmericanIdol," Lopez tweeted along with a screen capture of the trend.

Anthony and J. Lo weren't the only performers on the American Idol season finale -- Carrie Underwood, Lady Gaga, Beyonce and TLC were among those who showed up to celebrate the end of the 10th season.

"Me and her have been together since day one and we're gonna stay together," Scotty McCreery said of the runner-up, Lauren Alaina.

Watch Marc Anthony and J. Lo perform Aguanile

What did you think of the performance -- and of the American Idol finale?