United Kingdom Size 28–30 to US: XL (16–18)
Cross-market women’s blouse, t-shirt, and sweater conversion mapping 28–30 specifications into XL (16–18).

Analyzing Women’s Upper-Body Size Equivalence Across Markets
United Kingdom Size 28–30: 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.
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.
Other Conversions to US: XL (16–18)
United Kingdom Size 4–6 → us-xl-16-184–6 to us-xl-16-18
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United Kingdom Size 8–10 → us-xl-16-188–10 to us-xl-16-18
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United Kingdom Size 12–14 → us-xl-16-1812–14 to us-xl-16-18
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United Kingdom Size 16–18 → us-xl-16-1816–18 to us-xl-16-18
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United Kingdom Size 20–22 → us-xl-16-1820–22 to us-xl-16-18
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United Kingdom Size 24–26 → us-xl-16-1824–26 to us-xl-16-18
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United Kingdom Size 28–30 → us-xl-16-1828–30 to us-xl-16-18
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