US: 18W–20W (2XL) to Europe Size 40–42
Cross-market women’s swimwear conversion mapping 18W–20W (2XL) specifications into 40–42.

Analyzing Women’s Swimwear Size Equivalence Across Markets
US: 18W–20W (2XL): Corresponds to a bust measurement of 114.3 (45 ), cup support DD–DDD/F Cup, natural waist of 94 (37 ), hip girth of 119.4 (47 ), vertical torso loop length of 167.6 (66 ), and fit classification Extended Plus Fit.
Europe Size 40–42: Corresponds to a bust measurement of 88.9 (35 ), cup support B–C/D Cup, natural waist of 68.6 (27 ), hip girth of 94 (37 ), vertical torso loop length of 152.4 (60 ), and fit classification Regular Proportional Fit.
Other Conversions to Europe Size 40–42
US: 0–2 (XS) → eu-40-420–2 (XS) to eu-40-42
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US: 4–6 (S) → eu-40-424–6 (S) to eu-40-42
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US: 8–10 (M) → eu-40-428–10 (M) to eu-40-42
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US: 12–14 (L) → eu-40-4212–14 (L) to eu-40-42
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US: 16–18 (XL) → eu-40-4216–18 (XL) to eu-40-42
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US: 18W–20W (2XL) → eu-40-4218W–20W (2XL) to eu-40-42
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US: 22W–24W (3XL) → eu-40-4222W–24W (3XL) to eu-40-42
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