Personalized Little Mister Cotton Tail Bunny Easter T-Shirt. Celebrate Easter with the adorable Little Mister Cotton Tail. This T-Shirt - Athletic Heather features a cute bunny silhouette, perfect for the holiday season. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.