What is a Double Letter Cup Size? | ZeroBra Glossary
Understanding Double Letter Cup Sizes
Double letter cup sizes refer to bra sizes that use two identical letters (like AA, DD, FF) to indicate cup volume. These sizes extend the standard A-D cup range to accommodate smaller and larger bust measurements that fall outside the basic single-letter sizing system.
The Double Letter System Explained
In bra sizing, double letters serve two purposes. At the smaller end, AA cups are designed for women with very small busts, providing a step down from A cups. At the larger end, DD, EE, FF and beyond offer progressive increases in cup volume for fuller busts. Each double letter represents approximately one inch difference in bust measurement compared to the band size.
This system ensures that every woman can find her perfect fit, whether she needs more coverage and support or a more delicate, minimal design.
Why Double Letter Sizes Matter for Your Comfort
Getting your double letter size right is crucial for both comfort and confidence. An incorrectly fitted bra can cause spillage, gaps, or uncomfortable digging. Women with AA cups often struggle with standard A cups being too loose, while those needing DD+ sizes may experience inadequate support from smaller cups.
Proper fitting in double letter sizes ensures better posture, reduced back strain, and a smoother silhouette under clothes. It also means your bras will last longer when they're not stretched beyond their intended capacity.
Who Should Consider Double Letter Sizes?
Double letter sizes work well for women at both ends of the size spectrum. If you're petite with a smaller frame, AA cups in comfortable bra tops might be perfect for daily wear. For fuller-busted women, DD+ sizes in supportive gymwear provide the coverage and support needed during workouts.
New mothers often find themselves needing larger double letter sizes, making maternity and nursing options in these sizes particularly valuable.
Shopping Tips for Double Letter Sizes
Always measure yourself regularly, as your size can change due to weight fluctuations, hormonal changes, or life stages. When trying double letter sizes, pay attention to how the cup sits against your body - there should be no gaping or spillage. Remember that sizes can vary between brands, so don't be afraid to try different options to find your perfect fit.