Have you ever tried on a bra from a new brand and found that your usual size doesn’t fit? If you’ve experienced this before, you might find it useful to understand sister sizes, which can help guide you towards a more comfortable fitting bra size. Keep reading if you’re a 54 bra band size!
What Are Sister Bra Sizes?
Sister sizes are the bra sizes that surround your usual bra size. This might mean changing your cup size, band size, or both.
When you try on a new bra and it doesn’t fit, this could be down to any number of reasons, including a new brand or a new style of bra. Understanding your sister sizes will help you make an informed choice as to which other sizes you should try on to achieve the perfect fit.
You can read more about sister sizes in our What Are Sister Bra Sizes blog.
Size Chart For Sister Sizes For 54 Bra Band Size
This is our sister size chart for a 54 band size. Find your current bra size in the first column, and discover what sister sizes we’d recommend for sizing upwards or downwards. Once size located in the chart below then click the sister size to view the full range of bras in this bra size.
| Current Bra Size | Current Bra Size | Sister Size Up |
| 52C | 54B | |
| 52D | 54C | 56B |
| 52DD | 54D | 56C |
| 52E | 54DD | 56D |
| 52F | 54E | 56DD |
| 52FF | 54F | 56E |
| 52G | 54FF | 56F |
| 52GG | 54G | 56FF |
| 52H | 54GG | 56G |
| 52HH | 54H | 56GG |
How to Find Your Sister Bra Size
When you’ve located your current bra size on the chart, you’ll be able to read across and discover your sister sizes. There is an option to size up, if the bra you’re trying on feels too small, and an option to size down, if the bra you’re trying on feels too big.
If you go up in band size, you may need to go down in cup size. If you go down in band size, you may need to choose a higher cup size. This is just a guide - please note that sister sizing can be quite complicated as you may need to adjust both the cup size and the band size to get the best fit.
Sister sizes can be other sizes that surround the initial size. Take a look at our example chart based on UK sizing.
Related Searches: 54E Bra Sizes | 54FF Bra Sizes | 54G Bra Sizes | 54H Bra Sizes | 54K Bra Sizes | Underwired Bras | Non Wired Bras
Bra Recommendations For 54 Band Size and Sister Sizes For 54 Bra Band
If you wear any of these brands - Anita, Empreinte, Felina, PrimaDonna or Ulla Dessous then you could try the following bras.
1) The Kate Soft Cup Sports Bra – Product Code 6028 which is the perfect everyday bra as well as being a sports bra. This bra comes in a 56 bra band size and cup sizes D, E, F, G, H and I and also 54 band size with cup sizes D, E, F, G, H and I.
A super supportive non wired sports bra available in black or white in cup sizes D to N. A best seller.
The Kate Sports Bra range offers a choice of wired sports bra (6024) and soft-cup sports bra (6028) featuring wide comfort straps and shaping side support panel. Both styles are available through to ‘L’ cup and 56 backsize providing exceptional support and comfort.
2) For an underwired bra take a look at the KATE UNDERWIRED SPORTS BRA - product code 6024 available in 56 band size and cup sizes D, E, F and G and 54 band size also with cup sizes D, E, F and G.
The Kate underwired is a sports bra designed to control but can also be worn as an everyday bra and not just for sports activities. A full cup bra for the utmost fit, support and comfort in larger sizes. With wide straps and side support and slimming seams. In white or black in cup sizes D to L.
A full coverage underwired bra for everyday wear and special occasions in plus sizes. It comes in 56 bra band and cup sizes B, C, D, E, F and G and 54 bra band and cup sizes B, C, D, E, F and G.
A non wired front fastening bra with a high back for posture support. This bra comes in 56 band and cup sizes B, C, D, DD, E, F, G, H, J, K as well as 54 band with cup sizes B, C, D, DD, E, F, G, H, J, K and 58 band with cup sizes B, C, D, DD, E, F, G, H, J, K.
A best selling front fastening posture control back wire free bra. The adjustable front hook design and half-adjustable comfi straps provide optimum comfort and a customised fit. This is a very popular bra and comes in sizes 36B to 58K in black, white or cafe.
The ultimate everyday bra for comfort and support. This bra has 56 bra band and cup sizes B, C, D, DD, E, F, G, H and J and also 54 bra band with cup sizes B, C, D, DD, E, F, G, H and J.
A cotton support bra that is available in white, cafe and lilac in sizes 36 to 56 B to J.
A fuller bust bra which offers uplift, definition and comfort and is available up to J cup and bra size 56. This support bra has 56 band sizes and cup sizes B, C, D, DD, E, F, G, H and J and also 54 band sizes with cup sizes B, C, D, DD, E, F, G, H and J.
Available in a range of classic and brighter colours in 36 to 56 band sizes and cup sizes B to J.
Continuity colours include black, fawn, pearl blush and white. Available in cup sizes B to FF. With 56 bra band size and cup sizes B, C, D, DD, E, F, FF and 54 bra band size with cup sizes B, C, D, DD, E, F, FF.
If you think it might be time for a new bra and fancy trying a new style or brand and not sure what size it is you need to try. Then don’t hesitate to contact us on 01439 798388 and the experts at Amplebosom can help advise on the size.
Find Comfortable and Supportive Bras from AmpleBosom
Visit our Bras page to browse our incredible collection of bras for all body shapes and sizes, including the fuller figure. You can filter by size, so you can see which bras we have available in your usual size and your sister sizes.
Our collection features over 250 different bras in band sizes 28 to 58 and cup sizes AA to N. There are many different styles and features to suit your body shape and lifestyle. With so many to choose from, it can be quite daunting to know where to start, but our knowledgeable team is here to help! Give us a call on 01439 798388 and we can help you find your perfect bra.
If you think it might be time for a new bra and fancy trying a new style or brand and not sure what size it is you need to try. Then don’t hesitate to contact us and the experts at Amplebosom can help advise on the size.
Bra Measuring and Fitting Advice
For additional advice and information on finding a well-fitting bra, visit our blog posts on:
- Bra Measuring Guide - advice on measuring your own bra size at home
- Bra Fitting Guide - hints and tips to make sure your bra fits correctly
- Bra Size Guide - guidance on sizing for the different brands we stock
- Bra Fitting Appointments - book a fitting appointment with us in North Yorkshire
Frequently Asked Bra Fitting & Sizing Questions:
- What Are Sister Bra Sizes?
- How Do I Measure My Bra Size At Home?
- How Do I Find A Comfortable Bra?
- What Are The Best Bra Brands For Big Busts?
- How Do I Find The Perfect Fitting Bra?
- How Do I Know If I’m Wearing The Right Size Bra?
- What Should I Expect At A Bra Fitting?
- When should I have a bra fitted?
- My breasts are not the same size. What should I do?
- What is the difference between UK, US and European bra sizes?
Sister Bra Sizes from AmpleBosom
Here at AmpleBosom, we’re happy to answer any questions you may have on sister sizes or anything else! Our friendly team is on hand to give you specific recommendations on bras from our collection based on your measurements. You can either call us on 01439 798388 or drop us an email. You can even book an appointment to visit us here in North Yorkshire and have a personalised bra fitting.
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Blogpost last edited by Sara 22/07/2025.