This adorable costume includes one short-sleeved red dress with appliqued black and white circle with the word Thing and includes both the number 1 and the number 2 so you can velcro your choice on the dress and the attached skirt has a three-tier red and blue tutu. Our custom size chart for this costume will help you decide if it's the right fit for your child. The costume size runs small. Tights not included. Officially licensed by Dr. Seuss Enterprises.