US: XL (16–18) to United Kingdom Size 20–22
Cross-market women’s blouse, t-shirt, and sweater conversion mapping XL (16–18) specifications into 20–22.

Analyzing Women’s Upper-Body Size Equivalence Across Markets
US: XL (16–18): Bust interval range of 105.4–111.8 (41.5–44 ), natural waist range of 83.8–90.2 (33–35.5 ), shoulder width of 43.2 (17 ), sleeve length of 81.3 (32 ), style variants Relaxed Blouses, T-Shirts, Sweaters & Tunics, and fit classification Generous Full Fit.
United Kingdom Size 20–22: Bust interval range of 105.4–111.8 (41.5–44 ), natural waist range of 83.8–90.2 (33–35.5 ), shoulder width of 43.2 (17 ), sleeve length of 81.3 (32 ), style variants Relaxed Blouses, T-Shirts, Sweaters & Tunics, and fit classification Generous Full Fit.
Other Conversions to United Kingdom Size 20–22
US: XS (0–2) → uk-20-22XS (0–2) to uk-20-22
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US: S (4–6) → uk-20-22S (4–6) to uk-20-22
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US: M (8–10) → uk-20-22M (8–10) to uk-20-22
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US: L (12–14) → uk-20-22L (12–14) to uk-20-22
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US: XL (16–18) → uk-20-22XL (16–18) to uk-20-22
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US: 2XL (20–22) → uk-20-222XL (20–22) to uk-20-22
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US: 3XL (24–26) → uk-20-223XL (24–26) to uk-20-22
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