K.J. Apa, Cole Sprouse & Charles Melton on Riverdale (2018)

This week's new episode of Riverdale featured a series of flashbacks showing how the parents of the show's main characters became involved with a supernatural force connected to a mysterious game. The show's main actors all appeared in the flashbacks playing younger versions of their parents. The flashbacks also worked in some skin. K.J. Apa and Cole Sprouse ditched their clothes, playing teen Fred and FP, who went streaking inside the high school. Charles Melton was also shirtless, clad in just a towel for the locker room that preceded the streaking.

K.J. Apa & Cole Sprouse

Charles Melton