Vintage 70s Black and Grey Striped Dress

This is a vintage 1970s black and gray dress with horizontal stripes. There is no material tag, but it feels like polyester. It has pockettttsss! It's in great condition. Would look great with a belt and cute shoes. Size: labeled 16 1/2 No noticable flaws. I am a size 20 or higher in women's clothes, so this dress is a bit snug on me. **NOTE ABOUT THE MODEL** I am 5'9 and 270ish pounds. I have wide hips, a large stomach, and a completely flat chest. (I am transmasculine and have had top surgery and am on hormones, so I have broad shoulders and a wider waist as well)