Last weekend’s Celebrity Fight Night in Phoenix, Arizona, where the Moet & Chandon champagne was flowing, had celebrities including Jennifer Lopez, Mario Lopez, Steve Martin, Billy Crystal, Bo Derek, Rita Wilson, Narvel Blackstock, Reba McEntire, Andrea Bocelli, and more toasting the guest of honor, Muhammad Ali

All eyes were on Jennifer Lopez, who had the crowd buzzing with anticipation before her high energy, five song performance which closed out the star-studded evening.

Performing iconic hits such as ‘My Love Don’t Cost a Thing’ and ‘Get Right,’ Jennifer Lopez brought the crowd to its feet with a surprise duet of ‘Quizás, Quizás, Quizás’ with the legendary Andrea Bocelli.

Of course, beau Casper Smart affectionately watched his lady rock the stage from Muhammad Ali’s table.

Other Happenings:

Before her performance, Mario Lopez presented Jennifer Lopez with a humanitarian award for her work with the Lopez Family Foundation, which helps bring medical care to children around the globe.

Andrea Bocelli agreed to David Foster’s unexpected request on stage to sing a rendition of Elvis Presley’s ‘Love Me Tender.’

Bocelli also performed some of his greatest hits, including ‘Time to Say Goodbye’ and ‘Funicoli Funicola,’ while funny man Steve Martin performed with the bluegrass band the Steep Canyon Rangers, which Billy Crystal playfully mocked on stage as ‘the type of music you hear when you have bloodhounds chasing you.’

Billy Crystal also presented Steve Martin with an award for excellence in entertainment.