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Believe me. Measuring your bra size gives you more control when shopping for a bra. See all tips

Maidenform Women’s One Fabulous Fit 2.0 Half Cup Racerback Bra | See Amazon
Why should I know my sizes?
Maybe you’re buying a bra for the first time. Or you’ve been wearing the same size for a long time.
Researches tell us that many women wear the wrong-sized bra. It’s no luxury to get into the matter of bra sizing a bit yourself.

Marks and Spencer answers your common bra fit questions and shares tips on styles to suit you. Find your perfect bra with M&S BraFit™
Shop Women's small cups at Lulalu.com
30AAA - 42AAA | 30AA - 42AA | 30A - 42A
Remember that sizes can be very close.

A slight change in your measurement could mean a whole new bra size.
Want to know your real bra size? Take me to the Bra Calculator
Exactly how to measure yourself?
Ask someone to give you a hand if you like.


- stand for a mirror
- measure on bare skin or wear a bra without padding
- ask someone to help if you like it
- write down the measurements
Your underbust and bust size measurements determine your bra size.
That’s all you need.
Well, there is of course a calculator or bra size chart you’ll need to find out your best bra size.

Marks and Spencer answers your common bra fit questions and shares tips on styles to suit you. Find your perfect bra with M&S BraFit™
Shop Women's small cups at Lulalu.com
30AAA - 42AAA | 30AA - 42AA | 30A - 42A
Will my bra size change over time?

Some of us might wear the same bra size as we did 20 years ago. Others might need many different sizes in their lives.
Different causes may change our bra size during life.
Are you in between two possible bra sizes? If this is the case, it might be difficult to choose your best bra size.
I do advise trying also your possible sister size. Remember that different brands may have a different fit also.
Other articles you might like
Measuring guide on all topics
Why it’s best to handwash your bras
How to choose a comfortable bra band size?
About the average bra size UK
How to use the UK bra size chart
Why is my bra hurting me?

Marks and Spencer answers your common bra fit questions and shares tips on styles to suit you. Find your perfect bra with M&S BraFit™
Shop Women's small cups at Lulalu.com
30AAA - 42AAA | 30AA - 42AA | 30A - 42A