How do you get a nice looking hem on a super stretchy knit? I am shortening a knit dress into a blouse, and my first attempt flares out funny because it got stretched going through the machine. I serged around and turned under for a narrow hem. I used the differential feed on my serger and the fabric didn't look stretched out after serging, just after the hemming part. I am pretty new working with knits, so maybe I'm missing something basic?
Mommy to DS1
July '09 and DS2
Oct '12 and someone new in May '15