This is a vintage Sophisticates By Jonathan Martin chiffon blouse in a women's 12.
It is red and features a textured front, long sleeves, and a round neckline, and a button closure on the back.
The blouse measures approximately 22" from the back of the neck to the bottom hem, 20.25" from underarm to underarm, and 23" from the top of the shoulder to the cuff when laid flat. It was made in the USA from 100% polyester.
It is in very good pre-owned condition.