If you are on a limited budget, your best bet is this WAYF Shift Dress. It's a popular item, while not very costly. Another strong contender for your wardrobe is this Missguided Shift Dress. While the price of this item is rather reasonable, it will definitely attract a lot of attention. You might also want to consider this Eliza J Shift Dress. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.