Fifties Black Cotton Rockabilly Shirtwaist Dress with Eyelet Trim and Full Skirt from Raimondi of Dallas. This is a very simple cotton dress that buttons up the front (no zippers).
There is no size given, but has a 27" waist and is 19" from armpit to armpit. It is a larger dress that would be around a size 12.
This is a nice dress with no flaws that I could see except, like most dresses of this period, the belt is missing.