Jennifer Lopez and Kim Kardashian
Co-host J.Lo talks to the Keeping Up With the Kardashians star.
Gabriel Mann, Derek Hough, Jennifer Lopez and Kim Kardashian
J.Lo checks in with the telethon participants.
Kim Kardashian and Alex Rodriguez
The Keeping Up With the Kardashians star appears with one of the event's co-hosts.
Jennifer Lopez
The co-host gives a sizzling performance.
Demi Lovato
The singer gives a heartfelt performance of Leonard Cohen's "Hallelujah."
Jared Leto
The Oscar winner and Suicide Squad star addresses the crowd.
Vanessa Hudgens
The High School Musical alum takes a call.
Gwen Stefani
The singer appears onstage.
Zoe Saldana and Wilmer Valderrama
The Star Trek and Guardians of the Galaxy actress poses with the That '70s Show alum and NCIS star.
Selena Gomez
The singer addresses the crowd.
Ciara and Heidi Klum
The Project Runway host takes a call.
Ellen DeGeneres and Jamie Foxx
The talk show hosts checks out something on the actor's phone.
Jennifer Lopez
The singer performs on stage.
Gina Rodriguez
The Jane the Virgin star speaks to the crowd.
Ricky Martin
The Livin' La Vida Loca singer performs onstage.