Personalized 12th Anniversary Gift For Her T-Shirt. Cute butterflies and wonderful phrase on this T-Shirt - Gold. Great gift idea for a 12th anniversary. Everyone loves our Custom T-Shirts! 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.