I love sewing workout wear for several reasons. First of all, I need something to wear to yoga class. Secondly, I am far too frugal to spend $50 or more on a cute workout top. And last but not least, I can customize my makes to suit my style and color preferences.
I have had the vision of a white workout top with powernet inserts floating around in my head for a while. I just hadn’t gotten around to sewing one up. Enter the GreenStyle Jillian Tank. The pattern is loaded with options: a bandeau top; an inner tank, with or without a built in sports bra; and an outer tank that can be made with knit or woven fabric. I chose to make the inner tank with a built in sports bra.
I used white Supplex and white Powernet from Phee Fabrics to make my Jillian Tank. I like the simple design of the Jillian inner tank, because it gives the powernet inserts the opportunity to stand out. Adding inserts is really easy, it’s basically a simple color blocking technique. I cut two right angle triangles out of my powernet, being sure to cut them straight on the grain, with the greatest stretch going side to side. The sides of the L part of the triangles were 7″ long. I laid the triangles on the bottom corner of the tank front, and trimmed off the excess powernet to match the shape of the corners.

I marked the tank front 6.25″ up and 6.25″ over from the bottom corner and using my quilting ruler and rotary cutter, cut off the (smaller sized) triangles from the bottom corners of my tank front. Then I laid the powernet triangles on the tank front right sides together and stitched them together. I pressed the seam allowances toward the Supplex and top-stitched them in place so that you wouldn’t see them through the powernet.

I like to walk the beach whenever I get the chance. Since I don’t want to have to carry my phone and keys, I need pockets. I put pockets in all my workout tights and shorts, but occasionally, I’ll find myself wearing something without pockets. So why not start adding pockets to my workout tops? A hidden seam pocket gives cleaner lines than a patch pocket, not to mention how much easier it is to keep straight while sewing!
I cut a 4.5″ wide by 8″ tall rectangle out of powernet. I made it that large to ensure that my phone would stay snugly in place, yet still be able to reach in and grab a key or lip balm from the bottom of the pocket. I folded the top of the pocket down and stitched it in place. Then I laid the pocket right sides together 3.75″ from the right edge of the tank back at the bottom corner. I stitched along the right hand side of the pocket.

Then I flipped the pocket over and basted it along the side seam, and zig-zagged it in place along the bottom of the pocket. (Had I cut the pocket a bit longer, I would have lined it up with the bottom of the tank and just basted it in place.) When the tank is hemmed, the bottom of the pocket is securely sewn in place.

After these simple modifications, I just followed the pattern tutorial to complete my tank. I made another small adjustment to the pattern out of necessity. The pattern calls for double straps threaded through the top of the front shoulder strap. Rather than cutting and sewing the straps, I used plush bra strap elastic to speed up my sewing time. Since my strapping was wider than the sewn straps would have been, I went with a single strap.

I love having a solid white workout top to mix and match with my Super G‘s. The powernet inserts and pocket give the simple lines a little extra pizazz.


I can style it with a skirt or shorts for a completely different look.

I could see myself using this simple color-blocking technique to add in coordinating fabrics if I were trying to match workout tights with color-blocked side panels. The hidden seam pocket can be customized to fit whatever you want to carry. It’s so much more useful than the tiny little key pockets you find on ready to wear!
Go ahead and sew all the workout wear! After all, it is #memademay.
*This post may contain affiliate links. This means that at no extra cost to you, I may receive a small commission if you purchase through my links. As always, I only give my honest opinion. After all, it is my blog, which represents me! Thank you for reading and sharing my love of sewing and pattern hacking. 😉

I used a strip of powernet 1.5″ x 4″ to make my center back strap loop. I folded it in half lengthwise, and sewed it with a 3/8″ seam allowance. I turned it right side out, made a loop, slid it inside the center back opening I had left in the bra, and stitched it in place. Then I sewed 1/4″ clear elastic in the seam allowance along the top of the bra using a zig zag stitch. I stretched it slightly from the side seam up to the bra front points. I also stretched it slightly along the center front from point to point.
Stitch one end of your strap in place at one of the bra front points, turn the bra right sides out, string the strap through the loop and try it on. Adjust the strap length to fit you comfortably, while still feeling supportive. Then turn it inside out again to stitch the strap at the appropriate length, and trim off the excess. I think I ended up cutting a couple of inches off of mine.
Because I didn’t want the center front tie, I just made a gathering stitch down the center front of the bra top, and stitched my gathers in place with a zig zag, followed by a stretch stitch to ensure that my gathers stayed in place even with the frequent wearing and washing my workout tops get.
Then I cut a 6″ triangle out of my powernet. You can use the triangle you cut out of the bodice, (adding 3/4″ on the two sides to give yourself a seam allowance) as a pattern.








Since it’s not a capsule without at least three pieces, here’s my flat lay photo that includes my 













Other than the straps, I sewed the bra together per pattern instructions. While I love the look of the double straps, they are more time consuming to construct. So I still cut out four strap pieces, but used them flat (as main fabric and lining fabric) rather than as double straps sewn to each shoulder. I used powernet in my straps rather than adding elastic.
Once you’ve sewn your main and lining pieces together along the top, try the bra on, adjust the straps to length, then push the straps through the openings and stitch.
To avoid bulk, be sure to trim the seam allowances at the back strap openings on an angle before turning the bra right side out. It’s important to press as you sew. It helps everything lay more smoothly, and gives your projects a more professional finish. See the difference pressing makes between the left and right straps in the photo below?
The Lille body was wider than my bra. If I were making the body out of Supplex, and wanted it more fitted, I would have slimmed the top of the body a bit. Since I was going for a drapier fit with ruching, I just matched up my quarter points and eased the body to fit the bra.
I could have added a band with elastic on the inside at this point, but wanted to try something else. I used 3/8″ swim elastic cut to fit me at the snug yet comfortable length (just like you would trial fit the wider elastic in the band). I overlapped the elastic and stitched it together making a circle. Then I matched up my quarter points, and zig zagged the elastic to the seam allowance. After that, I flipped the seam allowance toward the bra, and top-stitched it in place.
To ruche the sides, I cut two pieces of swim elastic a couple of inches shorter than my side seams. I zig-zagged the elastic to the side seams and ta-dah, instant ruching!
When I go to the beach to get photographs in my makes, sometimes silliness overtakes me. But we’ll just say I was jump testing the workout top to ensure that everything stays in place!





