It doesn't take spending a boat load of money on designer brand clothing/shoes/and accessories for you to look like your outfit is expensive.
Here are some of my favorite websites and stores I shop at for some fabulous items at a low cost:

bebe Store or bebe.com


Urban Outfitters store or Urbanoutfitters.com

Gojane.com for great cheap shoes

H&M store

Forever21 Store or Forever21.com

Lulus.com for great shoes/clothes (especially dresses)/accessories