In videos filmed by The Hollywood Reporter's Chris Gardner, Adam played the guitar while his daughters sang Taylor Swift's new song.
"We could leave the Hanukkah lights up ‘til January," Sunny and Sadie sang and then received a standing ovation. "This is our place, we make the rules."
A-List stars approved
Based on the social media clips, the audience that included A-list stars like Cindy Crawford, Julia Roberts, Sean Penn, Courteney Cox and Kaley Cuoco loved the surprise performance. We think it was pretty wonderful ourselves!