US: 3XL (24–26) to United Kingdom Size 12–14
Cross-market women’s blouse, t-shirt, and sweater conversion mapping 3XL (24–26) specifications into 12–14.

Analyzing Women’s Upper-Body Size Equivalence Across Markets
US: 3XL (24–26): Bust interval range of 120.7–127 (47.5–50 ), natural waist range of 99.1–106.7 (39–42 ), shoulder width of 47 (18.5 ), sleeve length of 83.8 (33 ), style variants Curve Plus Tops, Tunics & Oversized Knitwear, and fit classification Curve Plus Fit.
United Kingdom Size 12–14: Bust interval range of 91.4–96.5 (36–38 ), natural waist range of 69.9–74.9 (27.5–29.5 ), shoulder width of 39.4 (15.5 ), sleeve length of 78.7 (31 ), style variants Blouses, T-Shirts, Tank Tops, Sweaters & Cardigans, and fit classification Classic Regular Fit.
Other Conversions to United Kingdom Size 12–14
US: XS (0–2) → uk-12-14XS (0–2) to uk-12-14
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US: S (4–6) → uk-12-14S (4–6) to uk-12-14
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US: M (8–10) → uk-12-14M (8–10) to uk-12-14
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US: L (12–14) → uk-12-14L (12–14) to uk-12-14
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US: XL (16–18) → uk-12-14XL (16–18) to uk-12-14
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US: 2XL (20–22) → uk-12-142XL (20–22) to uk-12-14
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US: 3XL (24–26) → uk-12-143XL (24–26) to uk-12-14
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