Hi there, I like stores such as ASOS, Forever 21, H&M. The clothes there always have discounts and bargains.
Another one is 2B bebe. You can get denim jeans at $20 each and they have cute designs.
Its fall/winter now, the weather is starting to get really chilly. Recently I've been buying my thigh high stockings / leggings from VienneMilano. Amazing quality and good prices. They have thicker ones for the cold weather.
For shoes, check out Two Lips. Lots of boots designs.
But if you are really really in a tight budget, have a look at 10 Dollar Mall.
All those I've listed are online stores.