Personalized Las Vegas Stays At Grandma's T-Shirt. Funny Las Vegas T-Shirt - Light Blue for kids and grandmas says WHAT HAPPENS AT GRANDMAS HOUSE, STAYS AT GRANDMA'S HOUSE. Cute gift for any grandchild and fun for Grandma too! 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.