Monsoon is very nice.I have noticed that most stores have clothes model in sizes 0-18 m, or 1-Xyrs, but I have not come accros a single brand who do the same model from baby to children sizes. What about getting similar outfits and maybe something simmilar for the hair? well the question now is what hair? unless your younger DD is one of the fortunate ones born with a lot of hair (a nice and very femenine little bandana?)
Just an idea...