my twins were not same sex, but I had a heap of unisex clothes that they just shared. Now my kids are older my boytwin and DS2 (2 years older) are approximately the same size so they share a lot of clothes too. First up, best dressed It's nice to have some outfits that are special for an individual child though, more so as they grow older and gain a sense of ownership. Your plan sounds too organised for me but it is a lovely idea and if it works for you from newborn then that's all you need to worry about