Laura would be boobs! She has a weakness for a good set of pecks on dudes or some real heavy boob on gals (with perhaps a sprinkle of envy in lue of the fact her own are a tad more modest).

Margaret and Midna though are both firmly on team butts. They can both appreciate a good set of cheeks on guys or gals, though the former of the two is distinctly more weak if they belong to a girl.