I noticed the last time my oldest wore her interlock Playtime dress, that the neckline has really stretched out - probably 2" worth. She wears it about twice a week and has done so since I sewed it about seven weeks ago. It has just now begun to stretch. I suppose I should have expected this, even with the staystitching and interfacing - most knit top/dresses have a banded neckline to prevent this very thing from happening, right? Any ideas for what I could do next time to prevent this from happening? I do love this pattern in a sturdy knit.