Personalized Hello Auntie Pregnancy Announcement T-Shirt. tell a sister or sister in law that she will be an Aunt with this adorable Hello Auntie pregnancy announcement for a reveal idea 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.