Oh how super lovely! A really unusual print on a super cute blouse or shirt. Made from a white poly-cotton mix (see label - final photo), it has white plastic shirt buttons and a very sweet hot air balloon print in black, grey and pink. The label reads 15, 38 (inches, centimeters) collar measurement. Excellent vintage condition!
Other measurements (measured flat and fastened; some measurements should be doubled):
Cuff: 8in (diameter)