Inside Bangkok Dating

Where Can I find clothes my Size in Bangkok?

I'm not a plus size girl(at least I dont think so), My waist is 30in and hips are 36.. I had a hard time finding Clothes that fit me correctly while I was there. Most of them were fine(correct fitting), bt I'd like them to b a bit more loose(like hw u see those Thai ladies wearing them).Also finding jeans were a bit hard too, coz m tall and almost all da ones i saw(street shopping) were just up to my ankles, Any Ideas?
Is there any place(street shopping) where u can buy individual pieces of clothing for cheap instead of in 3's and 6's? Thanks a lot!