Personalized MWAH Birthday Long Sleeve T-Shirt. Funny birthday Long Sleeve T-Shirt - Charcoal with little hearts, big pink and white letters that say MWAH!, a pink kiss print and KISS ME IT'S MY BIRTHDAY saying. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL