Among my favorite dresses is one designed by Diane von Furstenberg.
I discovered it while shopping in a department shop nearby, around 7 years ago.
I used the hand-wash setting in my washing machine to wash it many times since then.
The dress has remained the same size and has not suffered any damage in the wash.
Almost every DVF dress is washed this way in my house. It is 40 degrees now in Tokyo! Hoping enjoyable wearing summer dress be with you.