Ananova:

The drummer from Maroon 5 is not Leonardo DiCaprio's biggest fan after the actor reportedly swore at his mother.

Ryan Dusick was horrified by the stars alleged behaviour at a recent after-show party reports Femalefirst.

Dusick said: "DiCaprio came to watch our show and sat in the VIP lounge with our moms and there clearly wasn't enough room for him.

"He just started shoving and pushing my mom around. Then he flipped her the finger. Can you believe that? Leo flipped off my mom."

DiCaprio isn't the only star the band dislike. Frontman Adam Levine has slammed Robbie WIlliams, who has reportedly tried to romance Levine's ex-girlfriend Kelly McGee.