Pietro Boselli, the world's hottest math teacher and part-time underwear model, is ironically modeling his bare ass in a new high fashion photo shoot with photographer Philippe Vogelenzang.

The 27-year-old Italian beauty attracted legions of thirsty Instagram followers while teaching at University College London, and has since modeled for Dsquared2 and Charlie, even appearing nude in a beach-themed shoot for Emporio Armani.

Now, he's in the buff again, opposite model Ymre Stiekema for a new feature titled Ladies & Gents N°57.

You can check out more shots from the new campaign at Attitude.