Using Promo Codes when shopping at Little Mistress is just a few steps: Sign in to your little-mistress.com account, if you don't already have one, you will need to create a new Little Mistress account. Then, add the selected items to the shopping cart. Then, click Pay to enter the payment page, you can see the prompt [Use your Coupon Codes], check the Little Mistress Coupons of your choice, and then return to the checkout page and click Pay.