Vintage yellow and white gingham western shirt snaps (boys medium) women's xs-s

Vintage yellow and white gingham western shirt with snaps. labelled (boys?) medium but fits women's xs-s. Measures 36 across the bust, 34 mid-way, 36 at base and the total length is 24.5 (from top back of collar to bottom). Sleeves are 3/4 length on a woman.