Hand me downs...
Any parent will tell you that children grow up very quickly and are hard to keep in clothes.
Very little of what our boy Harry wears is brand new, most of it has been handed down from two sets of neighbours with older kids (and better fashion sense) than us. It's funny when we meet in the park and they recognise everything he's wearing. When Harry grows out of it, it gets handed down to a friend's younger kid and some of that clobber has come back again to be passed on to a little'un who arrived just three weeks ago - that's four owners at least.
Nobody sees this as unusual, or particularly green, just good common sense. Who says we are addicted to buying new stuff and throwing it away when it's not wanted?