US: 20-22 to United Kingdom Size 20-22
Cross-market women’s sleepwear conversion mapping 20-22 specifications into 20-22 for nightgowns, pajama sets, and sleep shirts.

Analyzing Women’s Sleepwear Equivalence Across Markets
US: 20-22: Corresponds to a relaxed bust range of 113–117 (44.5–46.1 ), elastic waist range of 95–100 (37.4–39.4 ), and comfort drape classification Loose Lounge Fit.
United Kingdom Size 20-22: Corresponds to a relaxed bust range of 105–109 (41.3–42.9 ), elastic waist range of 87–92 (34.3–36.2 ), and comfort drape classification Loose Lounge Fit.