My 5 year old son has this annoying habit of changing into a new set of clothes for each daily event.

Wake up – put on comfy, home clothes.
Going to the shops – put on nice going-out clothes.
Playing in the backyard and sandpit – put on old, muck-about clothes.
Bike ride in the evening – put on warm gear for the park.
Night time – new set of comfy, home clothes.

All that is actually ok. The real problem is that he leaves the discarded clothes on the floor. In a big heap.

At which, I politely point out : STOP LEAVING YOUR CLOTHES ON THE FLOOR!

And he replies, “WHY? You leave YOUR clothes on the floor!”