Reiss mini dress Size UK10/US6 but fits like a US2

Fun, bright minidress from Reiss London. UK 10/US 6 but runs very small, fits closer to a size 2. Fabric has no give, so plan for this to fit like a size 2. Has built in pockets and a built in corset for structure. Some slight discoloring under the arm, shown in pic above, but not noticeable. Worn once during a wedding. Questions? Leave a comment below!