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D4 is your Universal Cup Size (UCS)
Did you know American and European brands like Wacoal, Vanity Fair, Chantelle, Prima Donna call your cup size a G, but United Kingdom brands like Fantasie, Panache, Freya, Elomi call your cup size an F? Only at HerRoom, search 40D4 and see everything that comes in both your bra sizes.
5 Items
Find your best bra size
Fast
No measuring tape needed
Let's take a journey through the next few pages together. Get to the end, and I promise you'll have a better fitting bra size.
HerRoom CEO/Founder
Find your best
Bra Styles
By Tomima
You know your bra size. But, do you know your breasts? Sounds like a funny question, but certain bras styles and features work better for some breasts and not for others.
Answer the following questions, and I promise your new bras will make you look younger and thinner!
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