A Cup Bras

What is an A Cup Bra?

Cup size, aka that letter in your bra size, actually measures the difference between your bust and band measurements. For instance, an A cup indicates just a 1-inch difference between these two measurements.

Many of us get attached to wearing a specific cup size, but here's the truth: your cup size depends equally on your band measurement as it does on your bust. This means your cup size naturally shifts as your body changes, whether during your monthly cycle or throughout different life stages. It's also worth noting that you might wear different cup sizes depending on the brand, since sizing standards vary from one manufacturer to another.

Choosing the right A Cup bra

First, use our bra size calculator to confirm you're an A cup size. Then, determine your biggest needs as an A cup and choose a style accordingly.

How should an A Cup Bra fit?

A perfect A cup fit should encapsulate your breast tissue completely without any spillage or empty spaces. When bras run too small, breast tissue escapes from the top or around the sides, frequently leaving irritating red impressions on your skin. On the flip side, oversized cups create obvious gaps where your natural contours fail to fill out the fabric, which is a common fit issue for smaller cup sizes.