To update your shipping address with Coastal.com, you will typically need to log in to your account on their website. Once you are logged in, navigate to the account settings or profile section. There, you should find an option to manage your addresses, where you can add a new shipping address or modify your existing address. Make sure to double-check the information you enter for accuracy to avoid any delivery issues. If you have placed an order recently, it is important to update your address as soon as possible, as changes may not be possible after an order has shipped. For the most accurate information, you may want to visit the Coastal.com website and refer to their specific guidelines on updating account details.