Personalized Mardi Gras Party Celebration T-Shirt. Enjoy Mardi Gras and dress up with this adorable T-Shirt - Navy Blue featuring a smiling party mask and music instrument. 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.