keep your shirt on

US /kiːp jʊər ʃɜːrt ɑːn/
UK /kiːp jʊər ʃɜːrt ɑːn/
"keep your shirt on" picture
1.

stare calmo, non arrabbiarsi

to tell someone to calm down or not to get angry

:
Just keep your shirt on, we'll get there eventually.
Stai calmo, ci arriveremo alla fine.
Hey, keep your shirt on! There's no need to yell.
Ehi, stai calmo! Non c'è bisogno di urlare.