Item Sizing: The size guide found below is specific to the costume in this listing. Other costumes may have different sizing patterns. For example, company A's size medium may be equivalent to company B's size large. Be sure to check the size chart closely to make sure you know what you are ordering. The list below may indicate that more than one size fits you. If you are unsure of which size to choose, then go with the larger size because these costumes may tend to run small.Measurements are stated in inches.Size Toddler | Chest 21-23 | Waist 18-20 | Height 38-40Size Small | Chest 22-25 | Waist 19-22 | Height 38-46Size Medium | Chest 27-30 | Waist 23-25 | Height 49-54Size Large | Chest 30-32 | Waist 24-26 | Height 55-60Size One Size | Chest 30 | Waist 25 | Height 55Item Color(s): This item's color(s) may vary due to inherent variations manufacturing dye application or your computer monitor's color settings.