When did you find out twins genders?

Erin • 💙👦🏼 , ❤️👼🏻, 💙💙👦🏼👦🏼, ❤️baby due June 2022!

Just found out I am having twins, completely shocked and overjoyed!!!

Curious how many weeks you were when you found out your babies genders and how did you find out? Specific blood test or scan? 👶🏻👶🏻