-chested
The wrestlers fought each other bare chested.
He was bare-chested.他光着上身。
The politician has built a strong man image and likes to be photographed bare-chested doing manly outdoor things.
It's not unusual to see quite a few bare-chested fans at a football match even in the middle of winter.

SMART Vocabulary: related words and phrases

Not wearing or removing clothes
altogether
au naturel
bare
bare nakedidiom
barefoot
go commandoidiom
immodest
immodestly
immodesty
in your birthday suitidiom
nudity
revealing
shirtsleeve
shuck
shuck something off
streaker
trou
unclad
undress
undressed