Bought this in both L and XL being unsure of sizing not being US. The XL is perfect as a piece to dress up a slightly fuller top or dress to give a silhouette. The L is on the money just a tiny bit of shaping without having to loosen anything. Front zippers work well. This is not a shaper or trainer in any way, think of it as more of a wide slightly cinching belt alternative. It’s a bit longer than expected, but I’m short waisted. Delivery did take a bit, trying to reach CS with a payment question needs updating I.e. correct email address. Otherwise I’m happy and will definitely buy from again! A real corset next time.