I hate to be such a downer but...
The problem as I see it is that these days boys and girls already dress alike, well, revised, the girls all dress like the boys cept for a few cute widdle kicky skirts. Hey! I countries like Japan boys are wearing kicky widdle skirts.
Except for a few really crappy little Easter dresses and if one really searches, maybe a very plain-Jane cotton slip, there isn't any more really pretty little girls' dresses and no dainty little satin and lace slips, and the only panties on the shelves are really plain cotton bikinis with no lace and most of the pantie hidden in the but crack in the rear.
Lace trimmed anklets exist mostly in the baby girl department. Mary Jane shoes come with 2 inch soles and 4 inch heels.
So we can campaign till the cows come home and everybody will tell us that it fine with them if boys wear pretty little dainty dresses, slips, and panties, cus, hey! They don't exist unless one sews or has tons of expendable cash to buy them custom made on line or at the bridal boutiques!
Stopped at Walmart's yesterday and they had two dresses to select from and not a size 10 or 12 slip in the store!
So how are we going to dress boys up like dainty, sissy little girls?