For you:
http://www.forever21.com/Default.asp?cookie%5Ftest=1 Junior clothing for 15 dollars or less - dresses, skirts, pants and tops
You can find inexpensive, cool stuff on here. From Hot Couture, I have this pair of stitched jeans that literally has made dozens of people stop and talk to me.
You'll develop an eye for fashion. I recommend watching "What Not to Wear." Why? Stacey and Clinton are really good. When you start dressing to look good and you see how amazing you can look with a few changes, you WANT to do it.

If you want to talk dressing body types/measurements, we can sure enough take it to PM! I've been everything from a size 00 to a size 16, and my body has gone from hourglass to pear shape, so I know about dressing different shapes.