The star's surprise musical set came as she was in town to promote her latest film, 'Kiss of the Spider Woman'

According to The Hollywood Reporter, Lopez was seen with Unstoppable costar Jharrel Jerome and Kiss of the Spider Woman costar Tonatiuh. Other attendees at the two-night event included Post Malone, Niecy Nash-Betts, Jon Hamm, Zac Braff, Heather Gay, Whitney Rose, Harry Jowsey and more.

The multihyphenate touched down in Utah for the world premiere of her new film, Bill Condon's 'Kiss of the Spider Woman,' and hyped up the nightclub set at TAO with a performance that included "All I Have.

Jennifer Lopez hyped up the nightclub at the Sundance Film Festival as she marked her attendance at the DJ booth. The actress-singer joined Chase B to surprise the crowd, which erupted in cheers as she claimed to be in good spirits at the TOA Park City.

Jennifer Lopez shared an Instagram Reel of her all-black leather look for a night at the Sundance Film Festival. In the post, the star is wearing a round leather cap, a long leather trench coat with a small cape,