Late last night we saw this saucy snap pop up on our Instagram feed, and sure enough we'd know that bum anywhere: it's former Attitude cover star Austin Armacost.
The former CBB star clearly has no trouble showing off to his thousands of followers, who appreciated it with considerable thirst.
He also presented the 'booty' shot on his Twitter page.
Earlier in the week, the model and gay rights activist also showed the front half, for anyone still unsure of what that looks like.
Austin is the new face (and bum) of aussieBum and Prowler underwear, and he's recently shared some new images from that campaign too.
Pics: Austin Armacost strips off as the new face of aussieBum and Prowler
Go behind the scenes of Ben Hardy's Attitude cover shoot