Robbie Amell & Brian Dewar McNamara in The DUFF (2015)

The teen comedy The DUFF centers on Bianca, a high school student who starts a social revolution after being shamed. Robbie Amell stars in the film as Wesley, Bianca's neighbor, longtime friend and eventual love interest. Robbie gets to show off his great chest in three scenes of the film as Wesley raises his shirt to show off his abs, gets interrupted while getting dressed in the locker room, and shows up in a sex fantasy. Brian Dewar McNamara also strips down to his tighty whities in the previously-mentioned locker room scene. There's also a brief glimpse of Robbie's chest shown in a picture during the closing credits.