absolute effing shit. I bought 3 shirts from their final sale. Maybe I'm spoiled from purchasing higher end designer shirts... but no collar stays, i'm swimming in an XS in all places except the neck, and the shirt just feels raggity.
Perhaps you should purchase from the children's line because most people on here that are of a very slight figure find the extra small to fit small. What is your weight and height if you don't mind me asking?
The secret wash shirts aren't suppose to have the starchy feel that your typical collared shirt with collar stays. The purpose of the wash is to make them soft and comfortable and offer a casual relaxed look that looks better with the rinkles. Some of them do feel a little thin but from my experience this doesn't inhibit their wear. Again, the purpose of these secret wash shirts is to provide a comfortable casual appearance. You can't really do that with a heavy thick material. It just wouldn't drape the same.
I know J. Crew gets a bad rap on here from time to time but to be honest they have some pretty decent staple items that are good for supplementing your wardrobe. Not to mention their collaboration items recently have been pretty classy.