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An AWWT (Almost Without Words Tutorial)
I've put in many elastic waist bands for me and especially when I made clothes for my girls when they were little ones.
Here are SHOTS of my favorite way to put in an elastic waist band, because it uses the least steps. I used a serger, but you could use a zigzag or a stretch stitch.
This was done on knit fabric, but I have used it on woven cotton type fabrics. enJOY!