If you're not planning on spending much, why not check out this Alice McCall Romper. It's a great piece for a good price. Another strong contender for your wardrobe is this NBD Jumpsuit. While the price of this piece is rather reasonable, it will certainly attract a lot of attention. You might also want to consider this Norma Kamali Jumpsuit. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.