A NAKED Sam Thompson put Pete Wicks' Christmas hat on his todger as he sang in the show in a hilarious new advert.
The Made In Chelsea star, 28, released the video where he is completely starkers on his Instagram.
In the clip, Sam is taking a shower while singing a Christmas song.
However, another Sam - wearing an elf hat - hears the song and sings along, making his way to the bathroom.
They then confront each other in bathroom, with Sam's best mate Pete Wicks standing behind him.
The Towie star then chucks his hat off his head and gives it to Sam, who uses it to cover his modesty.
He captioned the clip: "We all know that I am a kid at heart, and what better time is there to be one than at Christmas… please excuse the singing voice 😂
This Christmas Elf is coming to Sky Cinema and to celebrate, they’re on the hunt for the UK’s biggest Elf fan. I thought it was me tbh"
Fans of the film Elf will recognise this as a riff on the Will Ferrell comedy, where Mary Steenburgen's character does a duet with Buddy while in the shower.
However, they sing "Baby It's Cold Outside".
The naked video comes after his ex girlfriend Zara McDermott was spotted sneaking out of his house at 9am.
The Made in Chelsea stars split in September after she cheated during X Factor: Celebrity last year.
Since then Zara has been on a mission to win back Sam after he broke up with her because of her infidelity.
Despite the furore, it appears that the duo are back on track after Zara was spotted making a hasty exit from Sam's house - before he later emerged.
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In photos obtained by , the Love Island star was pictured in an oversized purple hoodie, which looked similar to one Sam wore to an event in April last year.
Zara attempted to remain incognito with the hood pulled over her hair and draped a plaid shirt jacket over her arm.