Women wear bras to support breast tissue, improve comfort during daily activities, and provide shape under clothing. Bras can also help reduce strain on the back and shoulders, especially for larger bust sizes.

You may need to start wearing a bra when your breasts begin to develop, your nipples become more visible under clothing, or you feel discomfort during movement. A bra can provide coverage, support, and help you feel more confident as your body changes.

To calculate your bra size, measure under your bust to get the band size, then measure around the fullest part of your chest. Subtract the band from the bust to find the cup size. Each inch difference equals one cup size. For example, a 34 band and 37 bust would be a 34C. You can also use our bra size calculator for instant results.

Band size is the measurement around your ribcage, just under your breasts. Bust size is the measurement around the fullest part of your chest. The difference between these two measurements helps determine your bra cup size.

To find your band size, measure snugly around your ribcage just under your bust. To find your bust size, measure around the fullest part of your chest. Use these measurements to determine your bra size using our bra size chart or online calculator.

Measure your band and bust, then subtract the band from the bust. Each inch of difference equals one cup size such as A, B, C, or D. You can also use our calculator for accurate results.

ABCD in bra size refers to the cup size, which represents breast volume. A is the smallest cup, followed by B, C, and D as the size increases. The cup letter is determined by the difference between your bust and band measurements.

Cup size increases with each letter, so D is bigger than C, and C is bigger than B. The larger the letter, the more breast volume the cup holds.

A bra fits properly when the band sits snugly around your ribcage, the cups fully contain your breasts without gaps or spillage, and the straps stay in place without digging in. The center of the bra should lie flat against your chest, and you should feel supported and comfortable throughout the day.

Wearing the wrong bra size can cause discomfort, back or shoulder pain, skin irritation, and poor posture. It may also lead to gaping cups, slipping straps, or tight bands that dig into your skin. A proper fit ensures better support, comfort, and appearance.

To find the right bra for your breast shape, consider how your breasts are positioned and how they fill the cups. Some shapes need more lift, side support, or coverage. Trying different styles like balconette, plunge, or full-coverage bras can help you discover what fits and flatters your shape best.

The average bra size for a 25-year-old woman varies by country, but in the US and UK, it is typically around 34C or 36C. However, individual sizes can differ based on body shape and genetics.

The smallest standard bra size is usually 28AA, which has a very small band and minimal cup volume. Some brands also offer AAA cups for even smaller sizes.