Sister Bra Sizes For 38 Bra Band Size
When you try on a bra from a brand you haven’t tried before, you might find that your usual size doesn’t fit quite right. If you’ve had this problem before, AmpleBosom is here to help. We’ve put together a size chart to help you find similar bra sizes for you to try. In this blog, we’ll be looking at sister bra sizes for a 38 band size.
You can shop our extensive collection of bras via our shop now button.
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: Sister Sizes for a 38 Band Size Based On UK Sizing
This is our sister size chart for a 38 band size. Find your current bra size in the first column, then find out what sister sizes we’d recommend for sizing upwards or downwards.
Sister Size Down | Current Bra Size | Sister Size Up |
36A | 38AA | |
36B | 38A | 40AA |
36C | 38B | 40A |
36D | 38C | 40B |
36DD | 38D | 40C |
36E | 38DD | 40D |
36F | 38E | 40DD |
36FF | 38F | 40E |
36G | 38FF | 40F |
36GG | 38G | 40FF |
36H | 38GG | 40G |
36HH | 38H | 40GG |
36J | 38HH | 40H |
36JJ | 38J | 40HH |
36K | 38JJ | 40J |
36KK | 38K | 40JJ |
36L | 38KK | 40K |
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.
Please don't hesitate to give our experienced team of bra specialists a call on 01439 798388 if you would like advice about sister sizes and finding a comfortable and well fitting bra.
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.
Popular Underwired Bra Recommendations In Band Size 38
Elomi Matilda Underwired Plunge bra EL8900
A firm favourite in the office here at AB headquarters. This bra offers full support and a good coverage in the cups as well as the lower centre which gives a plunge look without giving any added volume as us bigger chested ladies don’t need any help in that department and is great for under the lower cup tops. The three section underwired cups with an added side support give both uplift and forward projection. The bra is finished off with some beautiful beaded detailing to the top of the cup. Comes in continuity colours black, café, white and pearl blush and again in a range of seasonal colours. In sizes 32-46DD to K.
Ulla Kate Soft Cup Sports bra - 6028
If you’re looking for a sports bra then look no further. The Ulla Kate sports bra come in two different options either a wired or a non-wired bra which is the one we are looking at today. The soft cup bra is a great addition to the wardrobe if you are looking for either a bra for sports or just an everyday bra. The bra is made from a moisture control breathable fabric to keep us dry during exercise. The added side support give a firm and forward shape and the upper part of the cup are made from layers of tulle fabric which is soft and kind to the skin. A best seller and for a good reason. In Black, Biscuit or White and in a great range of size from 32-56 D- N cups (Please note these are EU sizes.)
Goddess Keira Banded bra - GD6090
Goddess bras are designed with the fuller busted ladies in mind and the Keira bra is no exception as it is one of Goddesses most popular bras and with good reason. This underwired bra comes with four section cups which includes a side panel which gives you that forward projection. The cups are made from a satin simplex fabric. A flattering sheer panel to the top of the cup which gives a slight V neck look to the full cups. The straps are made from a restricted stretch fabric which gives some added support for all day wear. This bra comes in a fantastic range of colour from a choice of Continuity colours to ever changing seasonal colours and ranging from sizes 34-46DD to K cups.
Clara Comfort Soft Cup Moulded Bra - 5859
Anita comfort has designed the Clara Comfort Soft Cup moulded bra with just that in mind…Comfort. An everyday must have. The cup are seamless and give a lovely smooth finish to any outfit and comes with a sheer panel to the top of the cup. This soft cup bra is made from a supermicro Fabric which is firm and supportive for all day comfort. The half adjustable straps are lightly padded, which is great for anyone suffering with any shoulder pain. Available in cup sizes 34-48 B to G and comes in some lovely colours including rosewood and Blue heaven.
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.
Become part of the AmpleBosom community by following us on Facebook and joining our Facebook advice group.
You can also stay up to date with our weekly newsletter for the latest news, advice, and reviews.
Blogpost last updated by Francesca 10/02/2025.