J.Lo hosted the event in LA with boyfriend Alex Rodriguez at the same time as ex-husband Marc Anthony hosted an event in Miami; they joined forces to raise money for the Puerto Rico hurricane disaster relief.
Demi Lovato, Gwen Stefani, Andra day, Ricky Martin, Mary J. Blige, Chris Martin and Adam Levine performed tonight during the event.
If you would like to donate go to SomosOneVoice.com
Jennifer Lopez posted to Instagram backstage before the concert started.
J.Lo also re-posted a post from Ellen Degeneres on Instagram showing a video of a portion of the stars who were answering phones. Debra Messing from Will and Grace was got off guard as Ellen walked by and caught texting on her phone.
Watch the short video post from Ellen Degeneres below: