Adam Sandler throws one heck of a holiday party.
The Hollywood funnyman held his annual bash at Pickwick Gardens in Burbank, Calif., on Wednesday evening.
And considering the lengthy guest list, the evening affair was a regular who's who of Tinsletown!
But wait! There's more!
Now if that's not a motley crew, we don't know what is…
A source told us that the Billy Madison actor and his band played in front of the crowd for close to three hours and even brought up several of the guests to singing along onstage.
"Everyone was having the time of their lives. It is for sure one of everyone's favorite holiday parties every single year," the insider added.
Lautner and Hough were seen laughing and hobnobbing with friends and enjoying their time at the swanky soirée.
Sandler's production company, Happy Madison, has been throwing the event for the last few years with great success.
The night to remember was such a hit that most guests didn't head home until well after 1 a.m.—what party animals!
—Additional reporting by Dunia Dabibi