My mom wont buy me new clothes?

Not knowing your mother's financial situation, I can't really give a complete answer. However, you may want to consider babysitting or looking for other odd jobs in the neighborhood, like cleaning or yard work. And, if they are available, you may want to supplement your wardrobe by shopping at cosignment or second-hand shops. Of course, you will want to buy your shoes and undies new. But, first, you should discuss this all with your mother first. Good luck and hang in there.