Selecting the right size for a kaftan is essential to ensure a comfortable and flattering fit. When purchasing a kaftan online, pay attention to the measurements such as bust, waist, and hip circumference, and compare them to your own body measurements. Additionally, consider the desired fit of the kaftan, whether you prefer a relaxed, loose drape or a more fitted silhouette. If you're unsure, make sure you check the size charts available on the website for each design. They might be able to guide you through your perfect size of kaftans.