We Match! Say Hello To My Little Friend Adult & Baby/Kids Two T-Shirts Set (4T Child, Adult XL, Garnet) Choose both your t-shirt and T-Shirt size. Approximate sizing for the T-Shirts: 4T (Up to 7 pounds); 3T (7-17 pounds), 4T (17-25 pounds), 5/6T (25-30 pounds). T-shirts are standard adult unisex sizing. Both t-shirts are 100% cotton. This will make the cutest facebook/instagram/pinterest pictures! Excellent quality, comfortable and fun.