I was initially bummed because usually this type of pima cotton runs small and the larger size had sold out. I loved the Sally King watercolor print so much that I gambled on the size 5 for my 5-year old and they fit perfectly! SO far they haven't shrunk (also a serious plus!) and my son wears them almost every night. I really like that the "button down" appearance without the hassle of trying to wrestle a preschooler/kindergartner into buttoning down 6 buttons--just enough to pop his large head through and the shirt stays on all night without unbuttoning.
Bottom line--impeccable quality, practical design that is attentive to every last detail, incredible customers service and supports women-owned start up small businesses like The Letter Nest--wish there were 10 stars for this one!