My daughter gets a lot of dresses. Friends and family always seem to be buying dresses for her, which is wonderful. They are always beautiful and adorable. The problem is that in the colder weather, her legs are bare. That's why my daughter needs a big collection of tights and leggings to go under those pretty dresses.
Target has Circo tights and leggings in lots of colors and styles. I try to get a selection of white, off-white and pink because that's what goes with her dresses best. I especially like the leggings. They are like tights but do not cover the feet, so my daughter can wear shoes and socks. They usually have lace or some pretty little design at the end.
These don't last forever but they aren't very expensive. At the end of seasons you can often find them on clearance for a dollar or two. I stock up at those times so that I have them ready when they are needed.
Bottom line is if you've got a daughter who wears dresses, you've got to have tights. Target's got them and at a decent price.