The crop top is a pretty choice for warmer weather. Wear it alone or layered under a shirt and balance the cropped silhouette with high-waisted styles - a midi skirt or wide-leg pants.
If you're a frugal shopper, your best bet is this David Lerner Cropped Top. It's a terrific product, while not very expensive. Another smart option is this Free People Cropped Top. While the price is competitive, be sure that this product will become a valuable addition to your wardrobe. You might also want to consider this Cropped Top. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.