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If you're on a thrifty budget, this Stanzino Jumpsuit will fit the bill. It's a fail-safe choice, while not very pricey. In this price range, you can also check out this Full Tilt Jumpsuit. It's also a popular item and won't break the bank. You may also want to look at these Tommy Hilfiger Shorts. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for something in between pricewise, look at these Robert Rodriguez Shorts. While the price is very reasonable, this item is an easy wardrobe update.