Trevor Donovan is shirtless on the episode "The Enchanted Donkey" of 90201.

Matt Lanter and Trevor Donovan are shirtless on the episode "A Trip to the Moon" of 90210!

Matt Lanter, Trevor Donovan, and some of their surf teammates are shirtless on the episode "Unmasked" of 90210.

Trevor Donovan is shirtless on the episode "The Porn King" of 90210. I was surprised to find out he's already 30 years old. He certainly does not look like a high school student but I thought he was in his mid 20.