If you’re a 48 bra band size, and occasionally find that a new bra from a different brand doesn’t fit you quite right, you may need to try on a different size. This is where sister sizes come in. We’ll tell you which sizes are similar to your current size, guiding you towards finding the right, alternative bra size. Keep reading to discover our sister size chart for a 48 band size.
What Are Sister Bra Sizes?
Sister sizes are the bra sizes that surround your current size. It’s good to know what your sister sizes are, so you can try these on if a new bra doesn’t give you the level of support and comfort you’re used to.
There are many reasons a new bra might not fit. This could be due to trying a different brand, a different style of bra, or it could even be down to the manufacturer. If you do find that a new bra doesn’t fit as you’d expect it to, you may need to try on a different size - a sister size.
Read more about sister sizes in our blog.
Size Chart: Sister Sizes For 48 Bra Band Size Based On UK Sizing
This is our sister size chart for a 48 band size. Find your current bra size in the first column, and discover what sister sizes we’d recommend for sizing upwards or downwards.
| Sister Size Down | Current Bra Size | Sister Size Up |
| 46A | 48AA | |
| 46B | 48A | 50AA |
| 46C | 48B | 50A |
| 46D | 48C | 50B |
| 46DD | 48D | 50C |
| 46E | 48DD | 50D |
| 46F | 48E | 50DD |
| 46FF | 48F | 50E |
| 46G | 48FF | 50F |
| 46GG | 48G | 50FF |
| 46H | 48GG | 50G |
| 46HH | 48H | 50GG |
| 46J | 48HH | 50H |
| 46JJ | 48J | 50HH |
| 46K | 48JJ | 50J |
| 46KK | 48K | 50JJ |
| 46L | 48KK | 50K |
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.
If you would like to chat to our friendly team of bra specialists for more advice on sister sizes and finding a comfortable and well-fitting bra, please don’t hesitate to call us on 01439 798388.
Find Comfortable and Supportive Bras from AmpleBosom
Here at AmpleBosom, we have a wide variety of bras to choose from. Browse different styles from the world’s leading brands, and filter by size to see which bras we have available in your size and your sister sizes.
We have an extensive range of over 250 bras in our collection, stocked in band sizes 28 to 58, and cup sizes AA to N. We guarantee you’ll find something to suit your body shape, lifestyle, and budget.
Bra Measuring and Fitting Advice
For additional advice and information on finding a well-fitting bra, visit our blog posts on:
Sister Bra Sizes from AmpleBosom
We have a fantastic team of bra specialists, led by AmpleBosom founder Sally, who are here to answer all your questions and help you find the perfect bra. We can make specific recommendations based on your measurements, so you can buy in confidence. Call us on 01439 798388 or get in touch by dropping us an email.
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Written by AmpleBosom 31/10/2018 and edited by Sara 11/07/2024 and Jess and Sara updated 05/08/2024.