I have one answer that is sure to work: Clean out your Closet.
Tell your Mom that you have way to many clothes that you NEVER wear. Say you think you need to donate most of them. They practically have to say yes if you act like you agree with her. If you get rid of lots of old clothes and jackets, then when the time comes if it is the winter and you need a new jacket, you get to buy one that is in the current trends!
Plus, your closet will be clean!! (: