I have 2 denim mini dress NWT snaps down middle, puff sleeves

Purchased 2 of these cute denim snap dresses with puff sleeves. Tried to follow their size chart but neither work for me. I’m more of a medium, 6/8 in dresses. One sized “large” fits like an XS/S. The one labeled “XL” is more of a “medium”. See pics for measurements. They are high waisted. Would be precious with boots for college football game!;) also cute dressed with heels or wedges. Too expensive to return back to China- still for sale for 54$ on website… let me know if you’d like the “small” or “medium”