Matthew Bellamy & Gerard Butler Celebrate Halloween at 'treats! Magazine' Party

Matthew Bellamy is all smiles as he leaves the sixth annual treats! Magazine Halloween Party on Saturday night (October 29) in Los Angeles.

The Muse frontman was joined by his girlfriend Elle Evans.

Also seen attending the party were Gerard Butler, Josh Hutcherson, Sofia Richie, Paris Hilton, and The Weeknd, who wore a red skull mask.

“#GoodTimes at the @TreatsMagazine #Halloween Party with my sis #SofiaRichie. ✨🎃�’�🎃✨” Paris tweeted.

FYI: The event was sponsored by Absolut Elyx.

30+ pictures inside of celebs at the treats! Magazine Halloween party…