Do COS dresses run large?

    Runs large

    COS dresses run large. Runs large. Architectural volume, size down one.

    Need sizing help for COS dresses?

    Dresses notes

    Get a personal size recommendation for COS dresses, accounts for the brand's cut tendency and your saved measurements.

    GENERAL BRAND GUIDANCE

    This is a general brand-level sizing summary, not an exact product recommendation. For your specific size, paste a product link into the fit checker.

    COS Dresses sizing

    COS dresses run large. Runs large. Architectural volume, size down one.

    Best starting point

    Size down once in COS dresses if you want a clean line rather than an oversized silhouette.

    Cut note

    Runs large.

    Examples

    Think day dresses, midis, maxis, and occasion pieces.

    Which size should I buy?

    Default to sizing down in COS dresses if you want a clean line rather than oversized. Sizing stays consistent across COS dresses, so once you find your size it holds.

    Choose the slimmer feel

    Go down one size for a neater line, especially when this category already leans toward standard cuts.

    Choose the roomier feel

    Stay at your usual size if you want extra ease or like the look of standard cuts.

    Variability and caveats

    When COS can feel different from the usual sizing tendency

    Cut

    Relaxed cuts usually add ease, so they can feel roomier than the brand’s baseline.

    Fabric stretch

    Fabric stretch changes how strongly the sizing tendency shows up: more give softens it, less give makes it more obvious.

    Styling

    This brand is fairly consistent, but styling can still shift the feel when a piece is meant to be sharply fitted or deliberately oversized.

    COS uses generous, architectural fit blocks inspired by Scandinavian minimalism. Their oversized pieces are designed to drape, so stay true to size for the intended look.

    COS Dresses size chart

    Compare measurements side-by-side using the label rows below.

    EU sizeBustWaistHips
    32
    		30–32"23–25"33–35"
    34
    		32–34"25–27"35–37"
    36
    		34–36"27–29"37–39"
    38
    		36–38"29–31"39–41"
    40
    		38–40"31–33"41–43"
    42
    		40–42"33–35"43–45"
    44
    		42–44"35–37"45–47"

    Measurements are shown in inches where numeric values are available.

    COS dresses usually run large.

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