There are patterns for lace trim that is sewn onto fabric like this
one on Ravelry. You could search for knit trim or edging there for more. And there are patterns for girls' dresses like these with a knit bodice and fabric skirt.
http://www.knotions.com/issues/summe...irections.aspx
http://www.ravelry.com/patterns/libr...ummer-sundress