If you're not planning on spending much, your best bet is this Alice + Olivia Playsuit. It's a great item, while not very pricey. Another strong contender for your wardrobe is this Jumpsuit. While the price of this item is rather reasonable, it will certainly attract a lot of attention.
If you're looking for a happy medium, we recommend opting for this Kenzo Playsuit. While the price is very reasonable, this piece is an easy wardrobe update.