Somerville Sports Bra
Work out without compromise in the Somerville Sports Bra!
Designed by industry experts specifically for big boobs, this underwired sports bra delivers remarkable support in 120+ sizes from 28C to 54J. The front zip makes getting in and out easy, while two back options including a sporty cut-out design let you choose your own style.
Finally, a sports bra designed for full busts that gives you the support you deserve!
BONUS: Includes our Sew a Bra That Fits ebook free with the pattern download.
Overview
| Sewing level | Intermediate |
| Sizing | 28C-54J |
| Cup sizes | C-J |
| Fabric type | Woven, bra fabric |
| Pattern hashtag |
PDF Info
| Delivery method | Instant download ZIP file |
| Layers available | Yes |
| Number of pages: print at home file (A4/letter) | 4-10 per size |
| Number of pages: copyshop file (A0) | 1 per size |
| PDF pattern help |
Pattern Options
| Back | Solid, sporty cut-out |
Fabric & Supplies
| Main fabric | Lightweight non-stretch fabric (such as duoplex, cotton poplin, or quilting cottons). Note: Most non-stretch fabrics have a little mechanical stretch on the bias, which is desirable for this pattern. If your fabric does not have this, the cup fit will be more snug. |
| Lining | Lightweight non-stretch fabrics (such as 15 denier bra cup lining or nylon tricot). Note: Most non-stretch fabrics have a little mechanical stretch on the bias, which is desirable for this pattern. If your fabric does not have this, the cup fit will be more snug. |
| Back band | Mid- to heavy-weight stretch fabric with up to 50% stretch (such as nylon/spandex power mesh) |
| Interfacing | 2" x 10" (5 cm x 25 cm) piece of lightweight woven fusible interfacing (for zipper guard) |
| Band elastic | 1 1/2 yd (1.4 m) of 3/4” (19 mm) wide plush back elastic with optional picot edge |
| Underarm and neckline elastic | 3 3/8 yd (3.1 m) of 3/8”-1/2” (10-12 mm) wide plush back elastic with optional picot edge |
| Underwire channeling | 1 1/8 yd (1.1 m) of 3/8”-1/2” (10-12 mm) wide plush backed underwire channeling |
| Underwires | One pair of regular heavy duty underwires |
| Hook and eye | One set of 1/2" (12 mm) large size (coat style) |
| Zipper | Molded #3 separating zipper, at least 6 3/4" (17 cm) long |
| Needle | Universal or microtex needle, hand needle |
| Thread | Regular thread |
| Tools | Tailor’s ham or rolled up towel, tailor’s chalk or other marking tool, zipper foot, walking foot (optional) |
Model: Rachel
| Under bust | Full bust | Height | |
|---|---|---|---|
| Measurement | 37" / 94 cm | 48" / 122 cm | 5' 5" |
| Size | 38I |
Make This Look
Make This Look
| View | Sports bra with cut-out back |
| Fabric | Quilting cotton and power net |
Model: Brit
| Under bust | Full bust | Height | |
|---|---|---|---|
| Measurement | 30.5" / 77.5 cm | 40" / 101.5 cm | 5' 6" |
| Size | 30I |
Make This Look
Make This Look
| View | Sports bra with solid back |
| Fabric | Micro douplex and power net |
Somerville Sports Bra Sewalong
Sew the Somerville alongside Mari of Sew Happy.
Why it’s special:
C-J cups
Incredible support & shaping for big boobs
Front zip
More like this: Lingerie / Activewear / Bestsellers
Underwire sports bra sewing pattern with front zipper, 4-piece cups, and two back options including sporty cut-out. Exceptional support in sizes 28C-54J. Free bra fitting ebook included!
Sew your dream sports bra with 30+ Somerville kits, available from bra supply shops around the world!
Shop kitsWhy it’s special:
C-J cups
Incredible support & shaping for big boobs
Front zip
More like this: Lingerie / Activewear / Bestsellers
Adding product to your cart
Work out without compromise in the Somerville Sports Bra!
Designed by industry experts specifically for big boobs, this underwired sports bra delivers remarkable support in 120+ sizes from 28C to 54J. The front zip makes getting in and out easy, while two back options including a sporty cut-out design let you choose your own style.
Finally, a sports bra designed for full busts that gives you the support you deserve!
BONUS: Includes our Sew a Bra That Fits ebook free with the pattern download.
Overview
| Sewing level | Intermediate |
| Sizing | 28C-54J |
| Cup sizes | C-J |
| Fabric type | Woven, bra fabric |
| Pattern hashtag |
PDF Info
| Delivery method | Instant download ZIP file |
| Layers available | Yes |
| Number of pages: print at home file (A4/letter) | 4-10 per size |
| Number of pages: copyshop file (A0) | 1 per size |
| PDF pattern help |
Pattern Options
| Back | Solid, sporty cut-out |
Fabric & Supplies
| Main fabric | Lightweight non-stretch fabric (such as duoplex, cotton poplin, or quilting cottons). Note: Most non-stretch fabrics have a little mechanical stretch on the bias, which is desirable for this pattern. If your fabric does not have this, the cup fit will be more snug. |
| Lining | Lightweight non-stretch fabrics (such as 15 denier bra cup lining or nylon tricot). Note: Most non-stretch fabrics have a little mechanical stretch on the bias, which is desirable for this pattern. If your fabric does not have this, the cup fit will be more snug. |
| Back band | Mid- to heavy-weight stretch fabric with up to 50% stretch (such as nylon/spandex power mesh) |
| Interfacing | 2" x 10" (5 cm x 25 cm) piece of lightweight woven fusible interfacing (for zipper guard) |
| Band elastic | 1 1/2 yd (1.4 m) of 3/4” (19 mm) wide plush back elastic with optional picot edge |
| Underarm and neckline elastic | 3 3/8 yd (3.1 m) of 3/8”-1/2” (10-12 mm) wide plush back elastic with optional picot edge |
| Underwire channeling | 1 1/8 yd (1.1 m) of 3/8”-1/2” (10-12 mm) wide plush backed underwire channeling |
| Underwires | One pair of regular heavy duty underwires |
| Hook and eye | One set of 1/2" (12 mm) large size (coat style) |
| Zipper | Molded #3 separating zipper, at least 6 3/4" (17 cm) long |
| Needle | Universal or microtex needle, hand needle |
| Thread | Regular thread |
| Tools | Tailor’s ham or rolled up towel, tailor’s chalk or other marking tool, zipper foot, walking foot (optional) |
Model: Rachel
| Under bust | Full bust | Height | |
|---|---|---|---|
| Measurement | 37" / 94 cm | 48" / 122 cm | 5' 5" |
| Size | 38I |
Make This Look
Make This Look
| View | Sports bra with cut-out back |
| Fabric | Quilting cotton and power net |
Model: Brit
| Under bust | Full bust | Height | |
|---|---|---|---|
| Measurement | 30.5" / 77.5 cm | 40" / 101.5 cm | 5' 6" |
| Size | 30I |
Make This Look
Make This Look
| View | Sports bra with solid back |
| Fabric | Micro douplex and power net |
Somerville Sports Bra Sewalong
Sew the Somerville alongside Mari of Sew Happy.
Why it’s special:
C-J cups
Incredible support & shaping for big boobs
Front zip
More like this: Lingerie / Activewear / Bestsellers
Body Measurements (in)
| Under bust measurement (in) | 28-29 | 30-31 | 32-33 | 34-35 | 36-37 | 38-39 | 40-41 | 42-43 | 44-45 | 46-47 | 48-49 | 50-51 | 52-53 | 54-55 |
| Band size | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 |
| Full bust (in) | ||||||||||||||
| 31 | 28C | |||||||||||||
| 32 | 28D | |||||||||||||
| 33 | 28DD | 30C | ||||||||||||
| 34 | 28E | 30D | ||||||||||||
| 35 | 28F | 30DD | 32C | |||||||||||
| 36 | 28G | 30E | 32D | |||||||||||
| 37 | 28H | 30F | 32DD | 34C | ||||||||||
| 38 | 28I | 30G | 32E | 34D | ||||||||||
| 39 | 28J | 30H | 32F | 34DD | 36C | |||||||||
| 40 | 30I | 32G | 34E | 36D | ||||||||||
| 41 | 30J | 32H | 34F | 36DD | 38C | |||||||||
| 42 | 32I | 34G | 36E | 38D | ||||||||||
| 43 | 32J | 34H | 36F | 38DD | 40C | |||||||||
| 44 | 34I | 36G | 38E | 40D | ||||||||||
| 45 | 34J | 36H | 38F | 40DD | 42C | |||||||||
| 46 | 36I | 38G | 40E | 42D | ||||||||||
| 47 | 36J | 38H | 40F | 42DD | 44C | |||||||||
| 48 | 38I | 40G | 42E | 44D | ||||||||||
| 49 | 38J | 40H | 42F | 44DD | 46C | |||||||||
| 50 | 40I | 42G | 44E | 46D | ||||||||||
| 51 | 40J | 42H | 44F | 46DD | 48C | |||||||||
| 52 | 42I | 44G | 46E | 48D | ||||||||||
| 53 | 42J | 44H | 46F | 48DD | 50C | |||||||||
| 54 | 44I | 46G | 48E | 50D | ||||||||||
| 55 | 44J | 46H | 48F | 50DD | 52C | |||||||||
| 56 | 46I | 48G | 50E | 52D | ||||||||||
| 57 | 46J | 48H | 50F | 52DD | 54C | |||||||||
| 58 | 48I | 50G | 52E | 54D | ||||||||||
| 59 | 48J | 50H | 52F | 54DD | ||||||||||
| 60 | 50I | 52G | 54E | |||||||||||
| 61 | 50J | 52H | 54F | |||||||||||
| 62 | 52I | 54G | ||||||||||||
| 63 | 52J | 54H | ||||||||||||
| 64 | 54I | |||||||||||||
| 65 | 54J |
Fabric Requirements (yd)
| Bands 28-44, Cup C-E | Bands 28-44, Cups F-J | Bands 46-54, Cups C-J | ||
|---|---|---|---|---|
| Main Fabric | 45" wide fabric | 5/8 | 3/4 | 7/8 |
| Lining Fabric | 45" wide fabric | 5/8 | 3/4 | 7/8 |
| Power Mesh Fabric | 45" wide fabric | 1/2 | 1/2 | 3/4 |
Body Measurements (cm)
| Under bust measurement (cm) | 72-76 | 77-81 | 82-86 | 87-91 | 92-96 | 97-101 | 102-106 | 107-111 | 112-116 | 117-121 | 122-126 | 127-131 | 132-136 | 137-142 |
| Band size | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 |
| Full bust (cm) | ||||||||||||||
| 79 | 28C | |||||||||||||
| 81 | 28D | |||||||||||||
| 84 | 28DD | 30C | ||||||||||||
| 86 | 28E | 30D | ||||||||||||
| 89 | 28F | 30DD | 32C | |||||||||||
| 91 | 28G | 30E | 32D | |||||||||||
| 94 | 28H | 30F | 32DD | 34C | ||||||||||
| 97 | 28I | 30G | 32E | 34D | ||||||||||
| 99 | 28J | 30H | 32F | 34DD | 36C | |||||||||
| 102 | 30I | 32G | 34E | 36D | ||||||||||
| 104 | 30J | 32H | 34F | 36DD | 38C | |||||||||
| 107 | 32I | 34G | 36E | 38D | ||||||||||
| 109 | 32J | 34H | 36F | 38DD | 40C | |||||||||
| 112 | 34I | 36G | 38E | 40D | ||||||||||
| 114 | 34J | 36H | 38F | 40DD | 42C | |||||||||
| 117 | 36I | 38G | 40E | 42D | ||||||||||
| 119 | 36J | 38H | 40F | 42DD | 44C | |||||||||
| 122 | 38I | 40G | 42E | 44D | ||||||||||
| 124 | 38J | 40H | 42F | 44DD | 46C | |||||||||
| 127 | 40I | 42G | 44E | 46D | ||||||||||
| 130 | 40J | 42H | 44F | 46DD | 48C | |||||||||
| 132 | 42I | 44G | 46E | 48D | ||||||||||
| 135 | 42J | 44H | 46F | 48DD | 50C | |||||||||
| 137 | 44I | 46G | 48E | 50D | ||||||||||
| 140 | 44J | 46H | 48F | 50DD | 52C | |||||||||
| 142 | 46I | 48G | 50E | 52D | ||||||||||
| 145 | 46J | 48H | 50F | 52DD | 54C | |||||||||
| 147 | 48I | 50G | 52E | 54D | ||||||||||
| 150 | 48J | 50H | 52F | 54DD | ||||||||||
| 152 | 50I | 52G | 54E | |||||||||||
| 155 | 50J | 52H | 54F | |||||||||||
| 157 | 52I | 54G | ||||||||||||
| 160 | 52J | 54H | ||||||||||||
| 163 | 54I | |||||||||||||
| 165 | 54J |
Fabric Requirements (m)
| Bands 28-44, Cup C-E | Bands 28-44, Cups F-J | Bands 46-54, Cups C-J | ||
|---|---|---|---|---|
| Main Fabric | 115 cm wide fabric | 0.6 | 0.7 | 0.8 |
| Lining Fabric | 115 cm wide fabric | 0.6 | 0.7 | 0.8 |
| Power Mesh Fabric | 115 cm wide fabric | 0.5 | 0.5 | 0.7 |
Make It an Outfit
Look Inside Our Patterns
Designed by curvy fitting experts
Our expert team crafts patterns specifically designed to fit and celebrate curves—because your body deserves clothes that work.
Sewing patterns made in your size
Band sizes 28-54 and cups C-J. Just choose your size using our bra fitting guide for the perfect fit.
Clear step-by-step instructions
Sew with confidence using our comprehensive instructions with clear diagrams and professional tips for every step.
Personal expert support
Expert help when you need it most. Our curvy fitting specialists provide personalized support to guide you through any challenge.
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Your Cashmerette Size Results
Our patterns are designed for curves in cup sizes C-H. If your cup size is smaller proportionally to your shoulders than our C/D cup size, you will need to do a small bust adjustment. To calculate how much width you need to remove from your pattern piece, divide the total SBA amount needed by two (as the pattern piece represents half the garment). How to do an SBA >
Our patterns are designed for curves in cup sizes C-H. If your cup size is larger proportionally to your shoulders than our G/H cup size, you will need to do a full bust adjustment. To calculate how much width you need to add to your pattern piece, divide the total FBA amount needed by two (as the pattern piece represents half the garment). How to do an FBA >
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Contact UsFrequently Asked Questions
Use our bra size guide to find your Cashmerette size based on your measurements, not your ready-to-wear size.
In addition to the pattern pieces, you'll get comprehensive instructions with step-by-step illustrations, multiple printing format options for PDF patterns (print-at-home and copyshop), layered PDFs for easy printing, detailed cutting layouts, and access to video or photo sewalongs for many patterns.
You'll also get our Sew a Bra That Fits: A Complete Bra Fitting Guide included FREE with your pattern download.
Absolutely! Contact us anytime with any questions. We're here to help you succeed with your sewing projects, and we love hearing from you!
I have been looking for a front close sports bra pattern for a while. I had tried the Porcelynne Jackie pattern but did not like the compression and profile it provided. I have made regular bras and was just about to use my bra making knowledge to modify my go to banded pattern to try for a front zip
I probably purchased the pattern the first week it was out. I was a little put off by the suggestion of quilting cotton for the cups but since the first one was a tester I went with it. The directions are incredibly comprehensive and if I had not made other bras and taken a couple of Craftys bra making classes the information would have been incredibly useful.
By following the measuring advice, I made the first draft and it fit well but the gore was not quite tacking. So on the second version I moved up a cup size and it was fine. The cup construction was nice and although I have seen it in other patterns, it is not typical and it does provide a clean finish without having to topstitch or cover the seams.
I did "go rouge" on the second round and used fold over elastic on the neckline and the armholes. I split the FOE for the top of the cup and the strap, at the turn so that I could get a nice sharp point. I also sewed the shoulder seams before applying the FOE to get a nicer finish. I also thought that the method for shorting the zipper could lead to an issue becasue the stop was just sewn. I routinely shorten zippers using the appropriate stops. I got them from Wawak, where I also purchase zippers.
A few comments and wishes. It would really have been nice to have the individual cup pieces on single sheets of paper so that you didn't have to tape. For the print at home that would have made sense and for me since I was adjusting the cup I would have liked to print out only the necessary pages.
The instructions are incredibly detailed and I think that a careful person could make this sucessfully even if they had never made a bra before.
This is a terrific pattern and the final product is as supportive as my Elomi Energise sports bra.
I have sewn a number of bras with good success but never found a properly supportive workout bra…till now. Wasn’t sure about a front zip but works and feels great. Large, asymmetrical cups and I got this fitting well on first muslin and super well on second version. Very pleased!
To preface, I’m a trained and experienced bra sewist, and was excited to see an encapsulation style sports bra to try. I followed the excellent instructions and found them perfectly suited for an intermediate skill level. Bra fit is very individualized so everyone will have a different experience but for me the fit was extremely off. I followed the charts, picked the size they indicated, going up a size since I was between and it was comically too small in the cups. The bridge was also very wide for my frame. I expected to have to do some adjustments to get a good fit, but I’m basically redrafting the cups completely at this point. To be honest, I shouldn’t be surprised since this appears to be the first underwire bra pattern for this designer. As of now, I have given up on this pattern as it’s just more trouble than it’s worth.
I’m sorry to hear the Somerville didn’t work out for you yet! This is our third underwire pattern but it sounds like there may have been a printing scale issue given you already went up a size. We’ve sent you an email to help - Jenny
My first was not perfect but I will make a new with a better zipper and then I think it will be just right 😎
When Cashmerette asked me to review this pattern as a collaborator, I thought, I don’t actually need a sports bra, but I do need a bra that zips up at the front!
So I made this bra and was very pleasantly surprised but the comfort and fit. The cups are lined as you sew, making them very neat on the inside as well.
I am lucky because the Cashmerette patterns range usually fit me with little fit adjustments. The instructions for construction are excellent and there is a sew along video to help. It went together nicely with carful attention.
I made a band size 36 with J cups. In ready to wear I am a 36 G cup.