Thousands of fans flocked to The Grove on Thursday evening to see Jennifer Lopez's special appearance on "Extra"! Her sexy "On the Floor" music video debuted on "American Idol" shortly before J.Lo appeared at The Grove.

Watch "On the Floor"!

J.Lo spoke to Mario Lopez about balancing her busy career with being a mom to 3-year-old twins, Max and Emme. "You know, at the end of the day, the babies are the light of my life and the most important thing to me is my family. They come first and then everything else kind of comes after."

Gallery: J.Lo with "Extra" at The Grove!

The songstress said she and husband Marc Anthony take turns on being the "tough parent" with their children. "We kind of trade off." Lopez also believes singing runs in the family and revealed, "My daughter already has a bit of vibrato when she sings."

When asked if she plans to expand her brood in the future, the singer confessed, "You know what? We're not trying, but we're not trying not to, and if it happened, I would be so happy!"

Catch all of Jennifer Lopez's highlights from The Grove right here on ExtraTV.com!

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