70s Navy Polka Dot Blouse Size M

Vintage Blue Blouse with tiny white polka dots

1970s button front rounded collar top. Relaxed fit. 

Excellent condition.
Armpit to armpit 20 inches.
Shoulder to shoulder 14 1/2 inches
Sleeve 23 inches.
Length 25“

Model is 5’9 34/28/39 for reference