for a picky 13 year old who insisted that she needed a coat (necessitating a special trip to the nearest city as our town had nothing she liked), a coat, moreover, that she chose herself after trying on multitudinous outer garments in a variety of hideous retail locations then she should at least wear the thing once. It was bought at October half-term so she has had plenty of opportunity (freezing cold days, torrential rainstorms).
I know this is what teenagers do, but at least DD1 never made me buy her a coat she had no intention of wearing.