 Today is National Barbie Day. On this day in 1959, Barbie debuted at the American International Toy Fair in New York. Barbie's adult features made the toy a first of its kind, and the doll blew up worldwide. The first patent for Barbie was applied for on July 24, 1959. And in 1965, Mattel filed for the Barbie trademark. Happy Birthday Barbie!