Personalized My Mom is the Worlds Best Athletic Trainer Infant Dress. This My Mommy is the Worlds Best Athletic trainer Infant Dress - Heather has worlds best design for kids with my mommy is the worlds best athletic trainer occupation slogan for the son or daughter who’s mom is a Athletic trainer. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!