Latvian linen nightgown, custom made, size M

I have ordered many linen nightgowns from this Etsy seller in Latvia. They are amazing quality and nothing beats the feeling of sleeping in a good quality linen nightgown. This one was for my daughter and she never wore, too small for me. I think it is about size 6. It is labeled size L on the order slip but American size would be S or 6, in my opinion. It is new and never worn but I think I did wash it so there will be no shrinkage. Linen gets softer with each wash and doesn’t shrink.