Personalized I Love My Sister Cute Rainbow Hearts T-Shirt. Made with love and care, this design features a colorful rainbow heart pattern that symbolizes the strong bond between sisters. It's a fun and cute way to celebrate your sister's birthday, anniversary, or simply to say thank you for being there for you. 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.