Where to go shopping in Sydney?

I'm going to Sydney for a weekend and have 3 days in which I want to do some serious shopping.I'm an 18 year old female and am interested in finding affordable (not expensive designer) clothes, shoes, bags etc. Where should I plan to go?Which is the best market in Sydney?Any other suggestions about spending a weekend in this city would be appreciated :)|||ask for directions to the market in the CBDnothing more need to be stated