The very best fabrics for making a supportive bra can also be a little bit tricky to get a nice stitch on. After some testing, I discovered that the microtex needles gave the best stitch. Use the 80/12 with the So Fine and Metrosene threads. Use the 90/14 for the Magnifico thread. Feel free to test it for yourself! We offer individual needles for sale so that you can make sure it will work for you and your machine. I've tested these needles on nearly everything in the shop, and they work regardless of fabric type or elastic type.