Such a simple wardrobe item but I is my favorite now.  Very cool, can wear it over leggings, as a nightshirt , depending on the color (the slate is good, the white is  bit see through) it can be dressed up.  It is a bit small through the chest (only an A-B cup, so for me is fine) in the small.  Arm holes are just the right size - not so big my bra shows and not constricting .  If you hang it after washing or out of the dryer it doesn't wrinkle much, so good for travel.