The Miss Chic blazer dress has a structured-looking upper half: notched lapels, double-breasted buttons and puff shoulders above a pleated flare skirt. It is described as lined. Before treating the S, M and L labels as interchangeable with other dresses, compare the shoulder, chest and waist lines together.

Start at the shoulder frame

The listing gives 13.5, 14 and 14.5 in across shoulders from S through L. A half-inch shoulder step may change where the puff begins. Measure a blazer or dress that places its shoulder detail where you like, using the same endpoints if the seller can confirm them. The page does not say whether the puff is supported by a pad, so a front and side photo of the chosen size is more useful than assuming the sleeve shape is fixed.

Then test the buttoned bodice

Chest entries are 33, 34.5 and 36 in; waist entries are 28, 29.5 and 31 in. Both increase by 1.5 in per size. If your reference blazer matches M at the chest but L at the waist, ask how the chart was taken and compare the closed waist of a garment you already wear. A double-breasted front can pull or gap between buttons even when a circumference looks plausible. Request a straight-on image with the buttons closed; do not assume the pleated skirt adds room at the button line.

Do not size up for a longer dress

The source lists 31 in length for S, M and L. Choosing L for more chest or waist room therefore does not promise a lower hem. Check the length starting point against a dress you own and confirm lining coverage if the hem matters to your outfit. The source does not specify fabric composition or tested stretch, so those details cannot be used as fit shortcuts.