“Very pretty, but runs quite small”

“Have been hunting exhaustively for sleeveless cotton, non-knit chemise that doesn't cost an arm and leg or seem designed for the very old. This fits the bill except that it runs small. I am petite size 8/10 and purchase a Med. This would be fine if I had a sleeping partner whom I wanted to look sexier/stylish for. For myself, would prefer a bit roomier for comfort since the cotton is not stretchy. Sadly the large was sold out. But it is still a very nice look for the price and I will wear it.”