The 41-year-old has been in the "best mood" and partying with his gang ever since he won the best actor trophy at Academy Awards, his first after five nominations, reported People magazine.
"Since his Oscar win, Leo keeps celebrating with friends. He has been at several LA clubs since Sunday. He has been in the best mood," a source said.
DiCaprio won the Oscar for his role of a wounded fur trapper seeking revenge in "The Revenant".