MGK knows how to promote a movie (Picture: @machinegunkelly, Instagram, Rex)

Machine Gun Kelly found a rather ironic way to put bums on seats in cinemas for his new film, by getting his own out to promote it. 

The musician, who acts under his real name Colson Baker, shared a set of interesting behind-the-scenes photos and videos from his latest movie Good Mourning. 

Risking the wrath of Instagram, MGK chose the most revealing photo to share with his followers, showing him standing naked with only a small towel to cover his modesty. 

In the risque snap, the 32-year-old rapper stands in the middle of a large bathroom posing in the nude, appearing to be in between scenes, as a crew member was busy fixing the bathtub behind him. 

‘I did 5 whole sit-ups (and 200 blunts) to prep for my role in Good Mourning. 💪🏼🎬,’ he cheekily captioned the post. 

In a short video, MGK is seen bursting a water balloon against a co-star who looks shocked as he becomes drenched.

The crew member seems completely unfazed by the nakedness of it all (Picture: @machinegunkelly, Instagram)

MGK and his friend and co-director Mod Sun had a lot of fun on set (Picture: @machinegunkelly, Instagram)