keep your shirt on

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

se calmer, ne pas s'énerver

to tell someone to calm down or not to get angry

:
Just keep your shirt on, we'll get there eventually.
Calme-toi, on y arrivera finalement.
Hey, keep your shirt on! There's no need to yell.
Hé, calme-toi ! Pas besoin de crier.