Nick Jonas & Olivia Culpo Couple It Up For Halloween In Vegas - See Their Costumes!

It looks like Nick Jonas and Olivia Culpo are the couple to beat in the costume contest this Halloween.

The cute couple showed off their 1920s couple costume ahead of Nick’s hosting gig at 1OAK in Las Vegas on Halloween night (October 31).

PHOTOS: Check out the latest pics of Olivia Culpo

“Just had a feast! Thanks @StackLV for the amazing meal. Now time to turn it up @1OAKLV #vegasnights,” Nick tweeted just ahead of the event.

WHAT DO YOU THINK of Nick and Olivia’s couple costume?

20+ pics inside of Nick Jonas and Olivia Culpo…