N12H white tunic shirt dress button up flare sleeves breezy euro-summer minimal

Preowned, excellent condition, size tag missing. See measurements below for accurate fit. My guess is S-M based on the bust measurement and how loose fitting you want it. It is an aA-ine cut so the waist shouldn't be a problem. Pit to pit 19" Length: shortest part is 29 inches from shoulder to hem, longest part is 43 inches Tags: white long sleeve shirt dress, white button up asymmetrical mini dress, long sleeve short white dress, long sleeve white tunic, bell sleeves, flare sleeves, statement sleeves, Mediterranean, European, Parisian, flowy, vacation, minimalist, elevated basics, Boho chic, coastal 1149