US: M (8–10) to United Kingdom Size 12–14
Cross-market women’s blouse, t-shirt, and sweater conversion mapping M (8–10) specifications into 12–14.

Analyzing Women’s Upper-Body Size Equivalence Across Markets
US: M (8–10): 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.
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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