Once an order is placed with Aeropostale, it enters the processing stage quite rapidly. This means that there is a limited window for making any changes or cancellations. If you realize you need to modify your order, the best course of action is to act quickly. It is important to check the order confirmation email you received, as it may include details and guidelines on how to proceed with a cancellation or change. Generally, changes can be challenging once the order is in the fulfillment stage. If you are considering changing your order, it may be necessary to place a new order for the desired items and return the original items once they are received. For specific policies or procedures, checking the Aeropostale website can provide the most current and detailed information available regarding order changes and cancellations.