It sounds like your clothing style is very similar to mine (part hippie, part bohemian, with a splash of black and artsyfartsy for good measure)
My recommendations (similar clothing style, plus I do seamstressing) :
~The too big clothes are going to hide your new figure. Even if you belt a too big top, or redo the elastic in a too big skirt-it is still going to come out sloppy. The shirts for instance-the arms, armpit holes, neckline, and all of that are still going to be too large for you-even if you nip in the waist. It just isn't going to look right.
~GOODWILL/GARAGE SALE/THRIFT STORES~
Go nuts. Dig through, and find some treasures that will fit. I get broomstick skirts with the elastic waists and the little bells on the strings there all the time for about $4.00 a piece, the ones made in India. You will be able to find a few things if you dig around there long enough, to get you by for a while.
I understand your plight, because I don't like spending a LOT on clothes, when I plan on losing more and won't be in that size for too long. No sense in spending $50 on a pair of jeans that will only fit for a couple of months. Hit the thrift stores about once a week.
Trust me...you will look 10X better, and people will notice your new figure more if you are wearing things that let it show.