: Subtract your band measurement from your bust measurement. Each inch of difference typically equals one cup size (e.g., 1 inch = A, 2 inches = B, 3 inches = C).
: Many retailers like ThirdLove and Soma offer virtual "Fitting Room" quizzes that account for breast shape and common fit issues, often proving more accurate than simple measurements alone. 2. Navigating Styles and Sizing buy bra online
Sizing is not universal; a 34B in one brand may be a 34DD in another. : Subtract your band measurement from your bust measurement
Since you can't try the bra on before paying, your choice of retailer is critical. 10 Tips for Buying a Perfect-Fitting Bra Online - AARP 10 Tips for Buying a Perfect-Fitting Bra Online
: Your breast shape (e.g., bell-shaped, asymmetrical) significantly affects fit. For instance, demi or balconette bras often work better for shallow shapes, while full-coverage styles provide better distribution for larger busts. 3. Shopping Smartly
: Wrap a soft tape measure snugly under your bust, keeping it level with the floor. If the measurement is an odd number, round up to the nearest even inch.
: If a band is too tight but the cup is perfect, go up a band size and down a cup size (e.g., 34C to 36B). If the band is too loose, go down a band and up a cup (e.g., 34C to 32D).