SingPost Celebrates 40th Anniversary of Hello Kitty with Extensive Limited Edition MyStamp Releases through the Year In conjunction with Hello Kitty’s 40th Anniversary, SingPost will issue five limited edition MyStamp sets progressively in 2014 showcasing the evolution of Hello Kitty. Each MyStamp set comes with specially designed Hello Kitty collectibles and souvenir sheets. It is SingPost’s most extensive release of Hello Kitty MyStamp products to date. The Hello Kitty MyStamp products will appeal to Hello Kitty fans, young …