Reverse Brand Size Lookup | Find Your Size Across All Brands
Enter your size in one brand and instantly see equivalent sizes across 70+ brands. Compare Victoria's Secret, ThirdLove, Panache, and more side by side.
Brand Size Lookup
How to Use the Brand Size Lookup
Select Your Known Brand
Choose the brand you know your correct size in from our database of 70+ brands.
Enter Your Size
Enter your band and cup size in that brand's sizing system.
See Your Cross-Brand Sizes
Instantly see your equivalent size in every other brand, grouped by sizing system.
Why Bra Sizes Vary Between Brands
Different brands use different sizing systems (US, UK, EU, FR, JP, AU) and may have slight variations in how they grade cups and bands. Our tool accounts for these differences to give accurate conversions.
- Sizing system differences (US vs UK vs EU vs FR)
- Band measurement conventions vary by brand
- Cup progression scales differ between systems
- Fit models used for design differ by brand
Always check individual brand size charts and read reviews. These conversions are guidelines, not guarantees.