may have lost the Golden Globe for his role in Django Unchained
, but that didn't stop the actor from enjoying himself a few nights later.
Alongside best friend Lukas Haas, DiCaprio visited West Hollywood hot spot Bootsy Bellows on Tuesday night.
Donning a newsboy hat, DiCaprio mingled with club promoters, while Haas did "his own thing," an onlooker tells PEOPLE. "Leo hung back and sat on top of the banquette. He was getting a ton of attention from the ladies."
The usually quiet DiCaprio was "upbeat" and "even danced and clapped along" as music from Jay-Z and Kanye West
played. And when the actor was approached by other clubgoers, he was "very gracious and chatted with them for a few minutes," the source adds.
Once the lights came on, the two friends reconvened to figure out their plans for the rest of the night.