Vintage Da-Rue of California pastel poly blouse 10

Vintage pastel shirt - lavender, green, pink & white- from Da-Rue of California in Size 10. It seems like a large 10, please see measurements. It is 100% polyester and made in the USA. It buttons up the front and has long sleeves and shoulder pads. Also has 2 slits on the sides and bottom is flat so it can be worn untucked. Armpit to armpit measures 22”. Length down the back is 28”. Sleeve length is 18”.