The plaid shirt-collar maxi dress is described as floor-length and belted. Its chart covers M through 5XL, listing length, bust and sleeve but no waist or hip. That makes floor clearance a useful first check: a belt can shape the waist, but it cannot shorten a hem that catches underfoot.

Make a floor-clearance mark

Wear the shoes you plan to use. On a long dress you own, measure from its neckline or shoulder reference to a hem that clears the floor at your preferred distance. The plaid dress lists M at 155 cm length, L 156 cm and 5XL 161 cm. Ask the seller exactly where those lengths begin; without that reference you cannot transfer the number to your body. A hypothetical 156 cm measurement from your chosen origin might prompt a look at L, but the origin and your footwear must match before that comparison means anything.

Compare bust and sleeve together

M lists 104 cm bust and 58 cm sleeve; 5XL lists 128 and 64 cm. Each intervening size adds 4 cm bust and 1 cm sleeve. Compare a buttoned shirt dress or coat you already wear, taking measurements over the underlayer you intend to use. The listing does not say whether its values are finished garment widths or body guidance, or how the sleeve is measured.

Treat the belt as an adjustment, not a size chart

Ask for a flat waist and hip width, belt length and fastening photo. Those figures are absent, so choosing by bust alone may leave an unsuitable lower-body fit. The listing says cotton/polyester without percentages; request the care label if fiber balance matters. Red, orange and green are selector colors, not proof that the print or dimensions are identical in every variant.