By Breaking Celebrity News Staff

Jennifer Lopez and Marc Anthony had the audience going wild when they walked out on stage together last night.

"JLo and Marc each sang two songs -separately -but at the end they came out together in a hail of confetti and embraced," an eyewitness tells Breaking Celebrity News. "The crowd went nuts!"

The event was the finale for ¡Q’VIVA! THE CHOSEN LIVE presented by Blackberry, a celebration of Latin culture directed by Jamie King, who helmed Madonna’s Superbowl halftime show.

The sold out show at the Mandalay Bay Events Center in Las Vegas featured performances by Lopez and Anthony and showcased The Chosen artists that they and King discovered during the making of their international TV series ¡Q’Viva! The Chosen.

As emotional as Jennifer and Marc's reunion on stage was, Lopez didn't have her boyfriend Casper Smart far away.

He walked the red carpet with the American Idol judge for a party celebrating the release of her latest single right after her show with Marc.