lose your shirt
US /luːz jʊər ʃɜːrt/
UK /luːz jʊər ʃɜːrt/

1.
sein Hemd verlieren, alles verlieren
to lose a lot of money, especially by gambling or a bad investment
:
•
He lost his shirt at the casino last night.
Er hat gestern Abend im Casino sein Hemd verloren.
•
Many investors lost their shirts during the stock market crash.
Viele Investoren haben während des Börsencrashs ihr Hemd verloren.