You are looking at a Munsingwear Woman’s 2 piece Pajamas set. I believe they are from the 1950’s. The size is 34 , pretty flower design. The elastic is still good. The shorts have a small/ tight waistband. They have a silky feel made of Acetate a Run Proof Tricot. This set has been in storage for awhile. Please look at the pictures as they are part of the description. If you have any questions please send me a message and thank you for looking.