Maybe look into opening an Etsy up! You can sell your clothes there and get money to get new clothes. Keep in mind you'd have to pay for the shipping boxes (you can even used the bubble wrap envelopes which are way cheaper which is what I've done) but people love buying clothes off of that website because of paypal, etc.

Thrift shops have helped me a lot. All my clothes have been hanging off of me. And for my birthday I got $50 from family members and got better fitting (though still baggy. Not comfortable with my body yet) clothes that will last me through the fall + winter.