When you receive your mermaid bridesmaid dress, try it on carefully to ensure it fits well. Since it's made of satin, it's quite smooth and might need a bit of adjustment. When wearing, be gentle with the spaghetti straps to avoid any tearing. For cleaning, it's best to take it to a professional dry - cleaner. Store the dress on a wide - padded hanger in a cool, dry place to maintain its shape. If you ordered a custom - sized dress, double - check the measurements you provided before the order to avoid any fitting issues.