Yuko Yamaguchi (山口 裕子, Yamaguchi Yūko, born October 24, 1955) is a Japanese character designer and illustrator.
In 1980, Yamaguchi won an internal design contest with her design of Hello Kitty playing the piano, and would later become the third (and current) primary designer of Hello Kitty.
[2] Aside from Hello Kitty, Yamaguchi has been designing Jewelpet since 2008.
[3] She also created the illustration for TV Asahi's official mascot, Go-Chan.
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