My favorite store? For clothes, it's Ross! No tie.
Most of my dresses from Ross Stores cost $14.99 or under. No, not kidding! They carry more expensive things too (but let's face it, I'm cheap!).
I usually check out the clearance racks first, then browse through Juniors and Womens. They have formal wear, casual wear and work attire. Color selection is good too. I can usually find an item I like in a few different colors.
In my area, there are also Marshalls and T.J.Maxx stores. They're cool too, but not the best, in my opinion. Their prices are higher! Still worth a try. They are similar in nature.
I am in no way paid or compensated to endorse Ross Stores. I just love them - it's true!