The former Made In Chelsea star, 27, stripped down to just a pair of nude boxers for a special stunt celebrating the launch of London Fashion Week.
Why, you ask?
Well it was part of a showcase by online fashion site Lyst, showing what the future could be like if shoppers can virtually dress naked mannequins to try out different looks.
Which is a pretty cool idea, right?!
The idea is you have a blank canvas in your unclothed mannequin, then you use your phone or tablet to digital clothe them from searching through an online catalogue, so you can see how outfits look on before you buy.
Spencer's been pretty quiet this year, following his exit from I'm A Celebrity… Get me Out Of Here! last year, when producers discovered he'd taken steroids before arriving in the jungle.
After that - which he called a "stupid mistake" - he took time out from the limelight, becoming involved with charity work and flying to Tanzania to help build schools. He's also been focusing on his health, fitness and wellbeing.
It's been suggested Spencer could be given a second chance to return to the jungle this year, with a report in July claiming he'd been offered £50,000 to come back to Australia. But then this month, another report surfaced that bosses wanted to ban all reality stars from taking place.
So all we can do is watch this space.