As an expert in the industry, I can assure you that Snowflake Sunkissedcoconut Pajama Shorts are available in adult sizes. However, for younger teens and smaller children, a size small or medium may be a better fit. It's important to avoid sizing up if you are smaller, as the shorts may be too big. Please refer to the size chart for more details. Our model, an adult in her late 20s, is wearing a size adult large, which provides a comfortable fit for her 5"3, 140 lb frame. Here at Sunkissedcoconut, we value quality and believe in using only the best materials for our designs. That's why we use luxury paint, ink, and thread to create our prints, ensuring that our designs are long-lasting.