Black, red and white patterned button down blouse

Black, red and white patterned button down blouse. Has a collar. Short sleeves. Super cute. No marked size tag but i'd say a large in women's. Measures 21.5 inches pit to pit (42 inches) and it is 23.5 inches long. I am 5'3 and usually wear a medium in women's for reference. Please compare measurements to your own to make sure it fits. Used item, has been washed.