For the romper, yes, wovens work. And actually I think you said it probably wouldn't fit your dd until next summer but go ahead and make her one with a woven, I bet you'll be surprised and it'll be ok now. I need to make some w/ elastic in the legs for a bloomer look

I made my 3 yo a couple w/ the pattern from wovens and they fit great (she's tiny). I haven't made her any knit ones yet but the baby has some w/ the smaller version.