An ill-fitting bra can not only cause discomfort but also negatively impact your posture and breast health. In this article, you'll learn how to choose the right bra size, how to determine your bra cup size, and the most common mistakes women make when choosing a bra.
Why is knowing your exact bra size important?
A properly fitting bra is more than just about comfort. It's about breast health, support, and a beautiful appearance under clothing. Women often wear ill-fitting bras because they don't know how to determine their bra size correctly.
How to find out your bra size at home?
You'll need:
- a soft measuring tape;
- a mirror;
- no bra or wearing thin clothing.
1. Measure your underbust
Wrap the measuring tape just under your bust, snugly but not tightly. Round the resulting number to the nearest whole number—this will be your bra base size (e.g., 70, 75, 80, etc.).
2. Measure around the fullest part of your bust
Hold the tape measure parallel to the floor. This measurement will help you determine your bra cup size.
How to determine your bra cup size
To find your bra cup size, use this simple formula:
Bust – Underbust = Difference (in cm)
Difference Cup Size
10–11 cm A
12–13 cm B
14–15 cm C
16–17 cm D
18–19 cm E
20–21 cm F
Example:
Underbust — 75 cm,
Bust — 91 cm,
Difference = 16 cm → D cup, bra size 75D.
Common mistakes when choosing a bra
- A band that is too loose—the bra doesn't hold its shape.
- An ill-fitting cup means your breasts "sag" or don't fill the cup.
- Improperly fitting straps mean they provide less support.
How to choose the right bra size?
- Measurements – take them every 6-12 months.
- Trying – try on several styles.
- Consider the brand – sizes may vary.
- Check the fit – the cup should fully enclose your breasts, and the band should fit snugly.
Helpful Tips
- Don't wear a bra if it leaves marks.
- Change your bra every 6-12 months if worn regularly.
- Don't be afraid to ask a sales associate in store – they can help you determine your exact bra size.
Conclusion
Now you know how to correctly measure your bra size, how to determine your bra cup size, and how to choose your bra size at home. These simple steps will help you feel confident and comfortable every day.