Band size: Measure around your rib cage, just beneath your breasts, and round up to the nearest whole number. The band should fit snugly but not be too tight, as a proper fit provides the foundation of support.
Bust size: Measure around the fullest part of your bust, ensuring the tape measure is snug but not constricting. This measurement accounts for the volume of your breasts.
Cup size: Subtract your band size from your bust measurement to determine your cup size. Keep in mind that cup sizes can vary slightly between brands and styles.
Try different sizes and brands: It's essential to try on multiple sizes and brands to find the perfect fit. Different manufacturers may have different sizing standards, and a style that works well for one person might not be the best for another.