Personalized My First Rodeo Western Cowboy 1st First Birthday Toddler Dress. Whether you're looking for a cute onesie, a cozy t-shirt, or a fun accessory, our My First Rodeo Western Cowboy 1st First Birthday collection has something for every little cowboy. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!