The former catwalk queen - who hosts hit modelling competition America's Next Top Model and has her own chat show - has agreed to a three-book deal with Delacorte Press for a fantasy series for young people.
It's about a girl trying to keep up with the beauty game at an elite school for supermodels, or Intoxibellas.
Delacorte said 36-year-old Tyra's first novel, Modelland, is due to be released in the summer of 2011.
Delacorte is an imprint of Random House Children's Books.
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