H and M long sleeve shift dress

Worn twice. Fits narrow at the bust and shoulders. Falls a few inches above the knee on a 5’3” frame. Back hem looks like it may have come undone but could also be made that way for a slightly longer back than front. It doesn’t look unfinished or like it’s wrong when it’s on but it is slightly different than the front hem. Thicker material, back zipper. Very gently used, listed as size 6 runs slightly small