No boundaries it’s says it’s a L/G 11-13 but it’s really a medium. I only wore this blouse 1 time so it’s in great condition. It looks great with leggings in a size 2-4 so even if your small and petite it’s still looks cute on you. But can also fit if your a medium. Fits like a tunic Under the arm pits it measures straight across 21 inches length is 27 inches long down to the center bust was about 22 inches across