Ugh, story of my life here. Used to be a ballet dancer and now getting back to health from letting myself go after getting married and having two kids.
First thing to remember is some people, like me, will alway have thicker muscular thighs. Grasshopper legs, if you will. Second thing to remember is stretch, elongate the muscles, and less weight more reps. This will prevent the muscles from bulking up and keep them lean and tone.