Luke Hemmings & Arzaylea's 'Toy Story' Costumes Are Proof That A Disney Halloween Is Always A Good Idea — PHOTO

If there is one thing that I love, it's celebrities in Disney costumes. If there's anything I love more than that, it's 5 Seconds of Summer frontman Luke Hemmings doing pretty much anything (singing, performing, breathing, whatever). So when you combine the two — that would be Hemmings and his girlfriend rockin' some bonafide Disney ensembles for Just Jared's annual Halloween party on Sunday night — what you get is magic. Needless to say, Hemmings and Arzaylea's Toy Story costumes absolutely slayed.

According to Just Jared Junior (oh God I feel so old), the two attended the party at Tenants of the Trees in Silver Lake, California, dressed as Buzz Lightyear and Jessie from the best Disney-Pixar franchise ever. After stalking all of the photos I could find on Twitter, it's safe to say that the guitarist, 20, looks like a trick-or-treater who hasn't realized he actually outgrew the Halloween tradition and it is cracking me up. It's safe to say that Buzz Lightyear is his favorite Disney character, so the costume makes sense. (And just to refresh your memory as to why this couple costume works, Buzz and Jessie got together in Toy Story 2.)

The outing seems to mark the first ~official~ event that Hemmings and Arzaylea have attended as a couple since they first started dating in August 2015. Fans will remember that Arzaylea confirmed the relationship on Halloween last year, sharing a sweet photo of the two kissing. One year later, it's nice to see that they're not only still going strong — but are going just a little more public with their relationship.

Of course, this isn't the first Halloween party Hemmings attended over the weekend. He also dressed as Mia from Pulp Fiction at Halsey's Quentin Tarantino-themed bash, during which Ashton Irwin and Calum Hood rocked the Reservoir Dogs look. And in case you're wondering why Hemmings is rocking red nail polish as Buzz Lightyear, it's most likely because it was leftover from his Mia ensemble:

Halloween 5SOS forever.

Image: Kolasinski/BFA/REX/Shutterstock