Personalized Little Elf 3rd Birthday Toddler Dress. Toddler Dress - White with Speckles for a little elf's 3rd birthday with a polka dotted number 3 and snowy striped North Pole sign. Perfect for Santa's helper on his or her Christmas birthday. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!