keep your shirt on

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

rustig aan doen, kalm blijven

to tell someone to calm down or not to get angry

:
Just keep your shirt on, we'll get there eventually.
Rustig aan, we komen er uiteindelijk wel.
Hey, keep your shirt on! There's no need to yell.
Hé, rustig aan! Je hoeft niet te schreeuwen.