So I had someone tell me a story that they sewed for another person, and that person got mad cause the pre-washed fabric had shrunk and not to pre-wash anymore.
Well, let me tell you, I get home from the fabric store or get fabric delivered to me, first thing happening – it’s going straight into the washer: cotton cycle, cold. There are many reasons you want to wash your fabric before using it.
1. Most fabrics shrink or warp after the first wash. So imagine if you sew something with unwashed fabric and then wash it, your garment might not look exactly the same as it did when you were done sewing. Legs can be shorter, waistlines can be smaller, or just in general, it looks and fits weird.
2. Bleeding… I wash my fabrics separate so if it bleeds it bleeds on the fabric, not my expensive blouse I just bought at Kohl’s with my 30% coupon! Kidding aside, some fabrics bleed and you don’t want your clothes to end up with stains from the fabric if you would wash it for the first time, right?
3. And this one is just yuck, do you know where the fabric has been? I don’t know who handled it and where it got dropped!!! Did the lady that cut my fabric wash her hands? Who knows???
So that’s why you pre-wash your fabric, and if you buy cotton you might want to add an extra 1/8 of yard just in case….