Halpern’s Plaid Tartan Wrap Skirt

Very good condition Halpern’s Plaid Tartan Wrap Skirt Approximate measurements Lay flat waist 15.75” Length 21” I believe the size says G27 which is unclear to me. I have listed it as a medium but please Refer to the measurements (fits possibly like a 6-8?) Only one minor flaw shown in the last photo