In 1973, Shimizu designed the first original Sanrio character, Coro Chan.[1]
Hello Kitty
In 1974 Shimizu made the original design for Hello Kitty, whose fictional birthdate is November 1, the same as Shimizu's.[2][3] Hello Kitty is Sanrio's most successful and best known character. Shimizu based her name on Alice's black 'Kitty' from Through the Looking-Glass. Hello Kitty was designed to be a kawaii (cute) symbol to be used on merchandise.[2][3][4] In 1975, the design made her debut in Japan with her image on a coin purse.[2][3]
Sanrio has said Hello Kitty has no mouth because she "speaks from the heart" and that she is "Sanrio's ambassador to the world who isn't bound to one certain language."[5]
After Sanrio
Shimizu left Sanrio in 1976 to get married and has been working as a freelance designer ever since. She did not make a lot of money from Hello Kitty.[6]