How to choose the right bra size? How to measure your bra size ? Two essential questions before buying underwear.
Over 70% of women don't know their bra size. Either because you've evolved or because you haven't taken the time.
Essential and primordial, this precious step is not to be neglected. One of the missions of Chichi Castelnango is to promise all women to feel reassured in beautiful lingerie without forgetting to be above all at ease and comfortable in their lingerie.
A woman's chest is likely to swell or even shrink due to several factors... Just like menstrual periods, a hormonal problem, a pregnancy which can be at the origin of the evolution of the chest. Thus, it is important to calculate your chest size fairly regularly to buy underwear in the right size.
How to measure your bra size?
Step 1: The measuring instrument
Get a tape measure to measure the two most important criteria for knowing your chest size: the bust circumference and the chest circumference.
Step 2: The bust measurement or also called the back measurement
To calculate your bust size, place the tape measure just below your chest (or your balconies if you are wearing a lingerie top) and all around your bust. Be careful not to tighten the tape too much while ensuring that the tape is not too loose.
Step 3: Chest measurement:
The tape should be placed on the tip of the breasts (in other words the nipples) going around under the armpits, trying as much as possible to remain horizontal.

Some tips and tricks to avoid distorting the measurements:
- Stand up straight when taking the measurement,
- Make sure the tape is even with the skin,
- Wear an underwired bra without push-up or foam,
- Ask someone to help you take your measurements.
- Check with the brand and its size guide
- Take your measurements at least once a year.
How to choose the right lingerie based on your cup size?
Calculate your cup size
To know your cup size, you need to calculate the difference between your chest size and your waist size.
For example, if your chest measurement is 93cm and your back or bust measurement is 74cm, then you need to subtract 93-74 = 19. Therefore, the cup size corresponds to a D.
This result gives you your hat size according to the size guide below:
Difference |
Bra cup size |
13 cm |
HAS |
15 cm |
B |
17 cm |
C |
19 cm |
D |
21 cm |
E |
23 cm |
F |
25 cm |
G |
27 cm |
H |
29 cm |
I |
31 cm |
I |
33 cm |
K |
The Chichi Castelnango lingerie size guide
Chichi Castelnango has everything you need to make your life easier: a personalized size guide. Once you know your back size and chest size, go right here . 3 cm margin of error, and Chichi Castelnango automatically calculates your size and also gives you your cup size without calculation !!
Chichi Castelnango advises you to take your usual size and suggests you opt for size equivalents in case your cup size is no longer in stock. Also discover the article on plus size sexy lingerie .
In order to help you as much as possible, do not hesitate to ask our fairy Hanane for advice on WhatsApp at 07.61.73.17.11 or at the email address hello@chichicastelnango.com . You can also come and meet our lingerie experts in store to get a personalized opinion!
Now that you know your cup size perfectly, treat yourself with Chichi Castelnango. What would a pretty lingerie top be without its panties, thong or tanga for women? Glamorous and sexy , discover all our lingerie sets on Chichi Castelnango.
by Chichi Castelnango 🤍✨