This maternity tank gown was my first purchase from LAKE (3+ years ago) and it is still my favorite sleep gown. Highly recommend! I wore it through two pregnancies and postpartum. I purchased the XS in maternity and I wear a M in the non-maternity short sets. (5'5", 130lbs pre-pregnancy 34D, 160lbs pregnant 34-36DD)
For the first pregnancy, I washed on delicate cycle and laid flat to dry. Second pregnancy, I washed on delicate and dried on low heat. In my opinion, it didn't shrink much and is still as comfortable as it was when purchased! Another positive for moms, I didn't have any issues with stains from spit up, nipple balm, or postpartum recovery.