To apply a coupon code to an order on Stylebell.com, you should first ensure that you have the correct code ready. Once you have selected the items you wish to purchase, proceed to the checkout page. There, you will see a designated field labeled "Coupon Code" or "Promo Code." Enter your code in that field exactly as it appears, taking care to avoid any extra spaces or characters. After entering the code, you will typically need to click on a button labeled "Apply" or "Submit" to activate the discount. The system should automatically adjust your order total to reflect the discount from the coupon code. If the code does not work, double-check its validity and the terms associated with it. If you have further questions or need assistance, you may want to look for support options on the Stylebell.com website.