US: XL (16–18) to United Kingdom Size 8–10
Cross-market women’s underwear, panty, and thong conversion mapping XL (16–18) specifications into 8–10.

Analyzing Women’s Underwear Size Equivalence Across Markets
US: XL (16–18): Waist contouring range of 83.8–88.9 (33–35 ), full hip range of 109.2–114.3 (43–45 ), style variants Full Briefs, High-Waist & Boy Shorts, and fit classification Generous Full Fit.
United Kingdom Size 8–10: Waist contouring range of 66–68.6 (26–27 ), full hip range of 91.4–94 (36–37 ), style variants Panties, Thongs, Bikinis & Boy Shorts, and fit classification Slim Bodycon Fit.
Other Conversions to United Kingdom Size 8–10
US: XS (0–2) → uk-8-10XS (0–2) to uk-8-10
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US: S (4–6) → uk-8-10S (4–6) to uk-8-10
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US: M (8–10) → uk-8-10M (8–10) to uk-8-10
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US: L (12–14) → uk-8-10L (12–14) to uk-8-10
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US: XL (16–18) → uk-8-10XL (16–18) to uk-8-10
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US: 2XL (20–22) → uk-8-102XL (20–22) to uk-8-10
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US: 3XL (24–26) → uk-8-103XL (24–26) to uk-8-10
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