Vintage Beige and Black Patchwork Sleeveless Maxi Dress

Vintage Beige and Black Patchwork Sleeveless Maxi Dress. The tag is faded, but based on measurements it would best fit a size 2X, see below for exact measurements. The material is non stretch and there is a decorative button detail in the center of the dress. 
Measurements (taken while laid flat in inches):
Chest 25"
Waist 25"
Hips 30"