Women's Jersey Sleeveless Midi Dress sz M/L

Brand new with tags Sleeveless midi dress with a scoop neck and pockets. Green. New with tags. First Model picture for the colour Second model picture for the style! Check all pictures for details & measurements Says sz M on the dress but tag says sz L, tell me what is the right size based on measurements if I’m wrong! Approximate measurements: PTP: 19.5” (26” with stretch) Waist: 17” Length: 42”