Joe Jonas dressed as his fiancée Sophie Turner's 'Game of Thrones' character Sansa Stark for a Halloween party.

The 29-year-old singer attended a bash celebrating the spooky holiday on Saturday night (27.10.18) with Sophie, and while she attended in an adorable elephant costume, Joe decided to poke fun at his partner by dressing in drag as her alter ego from the HBO fantasy drama.

The DNCE frontman posted a series of Instagram stories complete with the show's theme tune and stickers of Kit Harrington's character, Jon Snow, Joffrey Baratheon, played by Jack Gleeson and Peter Dinklage's character Tyrion Lannister.

The 'Cake By The Ocean' hitmaker also posted a snap of himself and Sophie having fun with friends in a photo booth which he captioned ''another Saturday Nite (sic)'' while Sophie shared an adorable shot of the pair snuggling up in their costumes after the party.

Fans were quick to note the musician's hilarious costume choice and Joe was flooded with comments from fans who loved his outfit.

One user wrote: '' Wait a minute ... is Joe Sansa Stark? LOL I CAN'T. It's simultaneously hilarious and f***** adorable. (sic)''

Another said: ''Joe wins Halloween, Easily the best costume of the night and my favorite character in TV history. (sic)''

Although Joe is happy to dress up and Sophie's alter ego, he has told her not to tell him anything about the show's eighth and final season, which will air in 2019, because he's a ''big fan'' and would be disappointed if he knew what was going to happen.

He said: ''I can't wait for it to come back and I don't want to know any spoilers. Sophie won't tell me and she knows if she told me I would be so heartbroken because I'm such a big fan of the show. I'd be p***ed.''