Aeropostale provides a size guide on their website to help customers find the right fit for their clothing. The size guide typically includes measurements for different categories such as tops, bottoms, and dresses for both men and women. This guide can be extremely useful for determining the appropriate size based on individual measurements like bust, waist, and hip measurements. It may also provide information on how the clothing is designed to fit, whether it is a relaxed, regular, or slim fit. For the most accurate and updated information, including specific size charts for various items, it is advisable to visit the official Aeropostale website.