J.Lo, Marc Anthony, Chris Brown, and Enrique Surprise Fans at Pitbull and Ke$ha Show at Hollywood Bowl

Jeremy Blacklow

Pitbull promised some big surprises, and man, did he ever deliver?!

Following his performance on the finale of NBC's "The Voice" earlier in the day, Pitbull took to the stage at his Hollywood Bowl headlining show (dubbed the "Pitbowl" for the night), and brought just a few of his famous former collaborators with him.

Ke$ha was the opening act, and brought down the house with her glitter filled performance.

Brown came on stage to sing "International Love" with Pitbull, his collaboration with the Miami-based hitmaker. For Anthony, it was "Rain on Me," the song for which the former Mr. J.Lo sings the melodically-gorgeous chorus.

But Pitbull saved the best for last, bringing Jennifer Lopez herself on stage to end the concert with their latest collaboration, her new summer anthem, "Live It Up."

According to E! Online, J.Lo was seen backstage with boyfriend Caspar Smart, leaving in a limo together after her performance.

Also backstage after the show, sources there tell omg! that after his set Pitbull went person-to-person introducing himself as "Armando" (his real name) to every VIP and journalist in the house.

It's nice to see that this superstar has stayed as humble as ever as he's accomplished worldwide fame. And it seems like it was one heckuva night out in Los Angeles.

For a fun additional read, check out the Los Angeles Times's "Five surprises from Pitbull and Kesha at the Hollywood Bowl."