Personalized 45th Anniversary Celebrate T-Shirt. 45th Anniversary T-Shirt - Silver with words “Celebrating Our 45th Anniversary” for a 45th Anniversary Celebration. Add a name or customize for a personalized anniversary gift. 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.