The jowl-less "J. Edgar" star didn't go stag at the after parties, either; Mrs. DiCaprio was rubbing elbows at some of the most exclusive Hollywood fetes.
Putting on his best school boy, DiCaprio introduced his mother to an unsuspecting Jane Fonda. "Say hi to Mom," he said.
"Mom!" Fonda responded, which was a little literal, but it works. (We can only assume they talked about exercise after that.)
For more on the Golden Globes after parties, including Michelle Williams's mystery date and her love of tequilia, head over to The Carpetbagger.