First MAC, now H&M… Caitlyn Jenner looks set to follow in the Kardashian-Jenner sisters' modelling footsteps.

The transgender activist and former Olympian has just been announced as the new face of H&M Sport, and if the first behind-the-scenes snap is anything to go by, it'll be a killer campaign.

Caitlyn took to Instagram last night to share the first photo, which shows her sitting on a workout bench in an all-black gymwear ensemble.

"Backstage with @hm. Can't wait to show you more of this inspiring and amazing campaign!" she wrote.

H&M shared the same image via its official Instagram account, praising the "strong and beautiful" Caitlyn, and promising more pictures "later."

Just weeks ago, MAC confirmed a partnership with Caitlyn for a new lipstick to be released next month, sharing a seriously sultry first campaign shot of Caitlyn being preened by her glam squad while wearing a gold sequinned gown.

The rosy pink lipstick, called Finally Free, is a charity initiative by MAC, with 100% of proceeds from sales going to the MAC AIDS Fund Transgender Initiative to further its work in support of transgender communities.

Kendall Jenner better watch her back!