Katie Featherston's birth name is Katie Dianne Featherston.
Selwyn Toogood's birth name is Selwyn Featherston Toogood.
Katie Planche Friedrichs's birth name is Catherine Planche.
Katie Stam's birth name is Katie R. Stam.
Katie Chonacas's birth name is Kyriaki.
Katie Faris's birth name is Katherine Faris.
Katie Featherston is her real name. Micah Sloat is also Micah's real name. The actors gave their characters their own real names to help perpetuate the illusion that the movie is real.
Katie Featherston is 5' 6".
Vane Featherston's birth name is Vane Featherstonhaugh.
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The cast of Katie Featherston Audition Tape - 2013 includes: Katie Featherston as herself Janie Haddad Tompkins as Casting Director Micah Sloat as himself
Selwyn Toogood's birth name is Selwyn Featherston Toogood.
Katie Bowen's birth name is Katie Bowen.
Katie Bronsky's birth name is Katie Bronsky.
Katie Richmond's birth name is Katie Walker.
Katie Planche Friedrichs's birth name is Catherine Planche.
Katie's last name is never given in the movie. However, the characters Katie and Micah used their real names - Katie Featherston and Micah Sloat. So it can be assumed that those were also their last names in the movie.
Katie LaRoche's birth name is Katie Lynn LaRoche.