Rent The Runway has a specific policy regarding the cancellation and modification of orders. Generally, customers can modify their orders before they are shipped, which includes changing the rental dates or swapping items. However, once an order has shipped, it typically cannot be modified or canceled. It is important to check the specific details of the order, as there may be time limits and conditions that apply. Additionally, customers can visit the current web page for any guidelines on cancellations and modifications, as policies may vary based on membership type or specific rental items. For the most accurate and up-to-date information, it is always best to review the information provided on their website.