Model Watch: Sean O'Pry in Mario Testino's Towel Series

Since we discovered Mario Testino's #TowelSeries on Instagram, we've happily been keeping track of his latest subjects. The most recent model to be photographed by Testino in just a white bath towel is Sean O'Pry, currently the top-earning male model in the world.

The 25-year-old joins the ranks of David Gandy, Cristiano Ronaldo, Gaspard Ulliel and many, many others who've received Testino's towel snap.

RELATED: Mario Testino's Towel Series is Our New Favorite Thing

For more eye candy, follow Mario Testino @mariotestino and Sean O'Pry @seanopry55.

TOWEL SERIES 78, SEAN O'PRY. #MarioTestino #TowelSeries @seanopry55

A photo posted by MARIO TESTINO (@mariotestino) on Jun 6, 2015 at 11:19am PDT