Demi, Joe, Wilmer & Kat: NYLON Magazine Party Pals

Posted Friday December 6, 2013 2:33 PM GMT

Stepping out for a star-studded evening, Demi Lovato showed up at the NYLON Magazine December Issue Celebration in West Hollywood last night.

The “Heart Attack” songstress is the current cover girl for the publication, and she was proud to show off her blue hair and punky style outside Smashbox. Joining in on the fun was "Vampire Diaries" hottie Kat Graham, rocking a sexy crop top ensemble.

Demi’s ex-boyfriend Joe Jonas brought a mustache and his current girlfriend Blanda Eggenschwiler to the affair, though there didn’t seem to be any awkwardness between them.

And another one of Lovato’s loves, Wilmer Valderrama, turned up to show his support, making it an evening of Demi’s handsome hunks!

Photo Credit: Getty Images