Have you ever tried on a new bra from a brand you haven’t purchased from before, and found that your usual size doesn’t feel quite right? When this happens, it’s important to know what your sister sizes are so you can pick a different size to try on. AmpleBosom is here to help you find your sister size, so if you’re usually a band size 50, keep reading!
What Are Sister Bra Sizes?
Sister bra sizes are the sizes that surround your usual bra size. If you’re trying on a new bra that doesn’t give you the support and comfort you’re used to, you can try on these sister sizes instead.
Visit our What Are Sister Bra Sizes blog to find out more.
Size Chart For Sister Bra Sizes For 50 Bra Band Size
If your usual size is a 50 band, take a look at our sister size chart to find out which alternative sizes we’d recommend.
| Current Bra Size | Sister Size Down | Sister Size Up |
| 50A | 48B | |
| 50B | 48C | |
| 50C | 48D | 52B |
| 50D | 48DD | 52C |
| 50DD | 48E | 52D |
| 50E | 48F | 52DD |
| 50F | 48FF | 52E |
| 50FF | 48G | 52F |
| 50G | 48GG | 52FF |
| 50GG | 48H | 52G |
| 50H | 48HH | |
| 50HH | 48I | 52H |
| 50I | 48J | |
| 50J | 52I | |
| 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.
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 Comfort & Support From AmpleBosom
We have an incredible range of over 250 bras available from AmpleBosom, stocked in band sizes 28 to 58 and cup sizes AA to N. Browse different styles and features, with something to suit every body shape and lifestyle. Filter by size, so you can see which bras we have available in your size and your sister sizes.
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.
Additional Advice On Measuring & Fitting
Visit some of our other blog posts for additional advice on finding a well-fitting bra:
Sister Bra Sizes from AmpleBosom
If you need personalised support in finding a well-fitting bra, our friendly team is here to help. We’ll give you specific recommendations on bras from our collection based on your measurements. Give us a call on 01439 798388 or drop us an email - you can even book a bra fitting session with us here in North Yorkshire.
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Written by AmpleBosom 30/10/2018 and edited by Sara and Jess 20/08/2024