A symmetrical hem dress- Beautifully Couture M

I absolutely love this dress but It fits snuggly on my back end and I’ve never had the confidence to wear it! Bought it a high end local boutique. 100% polyester, super soft, heather gray color. No tags but never worn. Perfect condition. It’s a great dress! This is a medium. I usually wear a size 4 and am 5’8” tall for reference)