This Betsy Johnson sundress is charming. Feature a fitted waist with pleated skirt. Straps are adjustable by buttons and buttonholes.
Top is lined. Great material and color. Excellent condition. 
17" flat across the top armpit to armpit
14 1/2" flat across waist
29 1/2" underarm to bottom of dress
Tag says size 10 but think it runs on the smaller side