I shop Urban Outfitters. Its the best! Also try Forever 21 (another favorite), Charlotte Russe, Buckle, and Delia's. They are very unique stores. You can walk in there and come out with a really different looking outfit.
-Urban Outfitters is more "indie" and bohemian.
-Forever 21 has the best of all types. It has girly, bohemian, retro, and laid-back styles.
-Charlotte Russe is a little more put together and girly.
-Buckle is laid-back and bohemian-like.
-Delia's is just unique in general. They have very cute and whimsical clothing.
good luck!