To use "Pretty Girl Curves" promo codes, follow these steps: 1. Select a Pretty Girl Curves promo code that fits your order. 2. Copy the promo code to your clipboard. 3. Navigate to your shopping cart on prettygirlcurves.com. 4. Double check the right items are in your cart. 5. Find the promo code box, paste your code, and click apply. 6. Review your savings before finishing checkout. Remember, the discount should be automatically applied after you enter the promo code. Enjoy shopping!