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Help & Information

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Perfect Fit
We have prepared 5 steps including videos to guide you through. Give your best answers; you can always update it later.
Stand up straight whilst wearing your best fitting bra and answer the questions below.
What is your current Band Size?
Sorry, your size couldn't be calculated
Info How do I measure it?
  • Wrap the tape measure firmly around your underbust. Tip: Always measure in centimeters.
  • Pull it so that it feels comfortable, but not so tight that it causes discomfort.
  • In case you do not have a tape measure, enter an approximate size of your prefered bra.
Stand up straight whilst wearing your best fitting bra and answer the questions below.
What is your current Cup Size?
Please select a cup size
  • AA
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
Stand up straight whilst wearing your best fitting bra and answer the questions below.
How does your band feel?
  • My band feels tight and uncomfortable
  • My band feels loose and rides up at the back
  • My band feels perfectly comfortable
Info Our Tip:
  • For a perfect fit, a new band should be on the loosest hook and feel firm but comfortable.
Stand up straight whilst wearing your best fitting bra and answer the questions below.
How does your cups feel?
  • My breasts are not filling the cups and there is wrinkling in the fabric
  • My breasts are fully contained within the cups
  • My breasts spill out of one or more of these areas
Info Our Tip:
  • Your breasts should be fully contained within your bra’s cups, with no excess cleavage coming over the top
Stand up straight whilst wearing your best fitting bra and answer the questions below.
How do your straps sit?
  • My straps are digging in
  • My straps sit flat on my shoulders
  • My straps slide off my shoulders
Info Our Tip:
  • Straps are at their perfect length when the breast feels supported in its natural position – usually half way between the shoulder and elbow.
We think that the best fit for you based on your answers is:
You can continue shopping or visit us
in-store to be fitted by an expert
Do you know about sister size?

What bra size could also fit?

The so called sister size, sometimes also called diagonal size, of a bra is not the same size. The sister size is the next smallest or next larger bra size. It only varies in terms of a wider or tighter under bust circumference.

Tip 1

So if you feel that the under bust band is too tightyou can try to take the next size up of the under bust sizes with a smaller cup size: if your size is 36D, then size 38C has the same cup volume and a looser under bust.

Tip 2

If you think that the under bust band feels to loose, take the next smaller under bust size with a bigger cup: if your size is 40B, then the size 38C has the same cup and a tighter under bust.

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Bra Fitting Guide

At Triumph we pride ourselves on making exceptional lingerie. We have been listening to women for over 125 years and we continue to address their needs when it comes to finding the “perfect fit”.
We are truly committed to providing the best design solutions for every woman and, with this in mind, we want to offer a stress-free experience when choosing the perfect bra for every occasion.
Finding the perfect bra is essential for feeling comfortable and supported. Besides creating a lovely cleavage, a good fitting bra means:

  • Better posture
  • Relief for the back
  • Comfort with no pinching or pain

Our fitting guidelines help you find the perfect fit and determine the right bra size.
Alternatively, we recommend visiting one of our stores for a free Triumph bra fitting appointment with one of our specialists. Use our Store Locator to find your nearest Triumph store.

How to determine the right bra size?
There are three variables that you have to take into account when determining bra sizes for women: Under bust width, bust circumference and style that fits to that equation.
We recommend you take the time to make use of our professional bra fitting service in your nearest Triumph store: Store Locator.


Triumph measures for women
  • Please stand straight and breathe calmly.
  • Use a measuring tape.
  • Maybe a good friend can help you out.
  • Now measure the under bust width with a measuring tape:
  • The measure has to be taken just below the bust, quite tightly but comfortable enough to allow you to breathe normally.
  • Read the measurement from the tape and round up or down if necessary, to the nearest multiple of five, i.e. 75, 80, 85 etc.
For the cup size please measure the bust circumference.
  • The measure has to be taken on the widest part of the bust with a fairly loose measuring tape, in order not to deform or squeeze the breasts.
  • Ensure the measuring tape is at the same height across the bust as across your back.
  • Read the measurement from the tape.
  • Check out our bra size calculator once you have your measurements.
Your new bra fits perfectly, if it suits you like a second-skin without pinching or pain.


Triumph Size Chart
GB Sizes
EU Sizes
"SMART" SIZES
32A 32B 32C 32D 32DD 32E 34A 34B 34C 34D 34DD 34F 36A 36B 36C 36D 36DD 36F 38A 38B 38C 38D 38DD 38F 40A 40B 40C 40D 40DD 40F 42A 42B 42C 42D 42DD 44A 44B 44C 46A 46B 46C 48A 48B
XS XS S S S S S S S M M M S M M M L L M L L L XL XL L XL XL XL XL
1 1 1 2 2 2 1 1 1 2 2 2 1 1 2 2 2 4 3 3 3 4 4 4 3 3 3 4 4 4 3 3 4 4 4 5 5 5 5 5 5 5 5

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What makes our fuller cup bras so special?

1. The Straps: Decorative and supportive, the straps of our plus sizes bras are specially designed for your individual shape to provide the support you need without digging into your skin.
2. The special 3-D Flexi Wire: Tailored specially for Triumph fuller cup bras, the 3-D Flexi Wire is more supportive and flexible than a normal wire. It adapts to your body giving you a light uplift and a push-in effect for a beautiful and natural décolleté.
3. The under bust band: Carefully designed with the extra support of the side boning, the waistband releases pressure from your shoulders providing you the majority of the support. It is designed to sit firmly around your body without digging in. For extra comfort it has extremely soft hook-and-eye closure.
Those of us with fuller cups shouldn’t need to choose between feeling fully supported and looking beautiful in a stylish bra. That’s why our experts have created the Triumph Fuller Cup Lingerie collection which offers both and is supporting you.
Triumph's Beauty-Full Dessous collections are beautifully designed to fulfil style and support standards for fuller cups.


Discover our Fuller cups collection >


How to identify the perfect bra fit?
When a bra fits perfectly you will feel like a goddess: the bra is comfortable when there’s no pinching or pain, it supports you weightlessly and creates a feminine silhouette. You will love wearing it! And maybe forget it’s even there.
A lot of women do not feel this way. Surveys and studies reveal that most women tend to be wearing the wrong bra type or, more often than not the wrong bra size. We would like to make sure that you feel confident and comfortable in every Triumph bra you wear.
To help guide you through the process, we have gathered the key points which show that a bra fits perfectly. We suggest that you check the fit of the bras in your lingerie drawer according to them:


  1. The under bust band:
  2. This part of the bra provides the majority of the support so it is important that it fits firmly, parallel to the cups. Look in the mirror and check that the band is at the same level all around your body. You don’t want to have back pain because of wearing the wrong bra size, do you?

    • When buying a new bra, fasten it on the first/outermost row of hooks. This will allow the bra to be tightened as the under bust band starts to get slightly looser after you’ve worn it a few times.
    • If the band rides up at the back it is probably too big. Please choose a smaller under bust size and go up a cup size.

  3. The straps:
  4. They should sit parallel or slightly V-shaped on the back.

    • If the straps are digging into your shoulder it might be a sign that the under bust band is too big and not giving enough support. Try a smaller under bust size and a cup size bigger.
    • If the straps, after being adjusted, are slipping down your shoulders it might mean that the under bust band is too small. Try a bigger under bust size, and consider trying a cup size smaller.

  5. The cups:
  6. The cups of a bra, especially when underwired should go right around the contour of the breast sitting flat against your ribs without digging into the breast tissue. The whole breast should also fit neatly into the cup with no excess of flesh showing on the sides of the cup or spilling out over top. This applies even when wearing push-up or low cut bras. In extreme cases wearing cups that are too small will give the appearance of four breasts. There should not be any space underneath the cups at the root of the breast or any gaping across the top half of the cup.

    Before you change the cup size, please make sure that your breasts are completely “dropped” into the cups. Lean a bit forward, lift and jiggle them into the cup and smooth out the sides.

    • If you feel the underwire is digging in between your breasts or in the breast tissue, try going one cup size bigger, but keep the under bust size the same.
    • If the under bust band is curling up or standing away from the body, the cup is probably too small, go up a cup size, keep the under bust size the same.
    • If the cup puckers and looks baggy it is probably too big, so try a smaller cup size with the same under bust size.

  7. The centre front of the bra:
  8. The centre front of the bra sits between the breasts and is also called a bra bridge. The bra bridge should lie flat against the body.

    If there is a gap between the bra bridge and your rib cage, or the bra bridge sits on top of your breasts, it might mean that the cup size is too small. Try to go up a cup size, keeping the under bust size the same.

    In case you discover that the bras in your lingerie drawer do not fit as described, we recommend a professional bra fitting in one of our Triumph stores. The Triumph Store Locator will help you to find the one closest to you.

    Nevertheless, every woman is different and no two breasts are exactly the same, so the comfort and fit may also be affected by the type of bra you’re trying on. It might be that a balconette bra fits you better than a full cup bra in the same size, or a wired, padded bra better than a wired bra. Therefore try different bra styles to find your perfect bra fit.


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