Photoshoot of Kristen Stewart for Nylon, from the March issue.
LOS ANGELES, Calif. -- At Sunday night's 81st Annual Academy Awards, "Twilight's" vampire teen heartthrob Robert Pattinson was a presenter alongside "Mamma Mia" star Amanda Seyfried .
It left many wondering: where was his "Twilight" co-star, Kristen Stewart ?
Access' Billy Bush got the answer on the red carpet, when he asked Kristen's father, John Stewart, why she wasn't presenting with Robert Pattinson .
John responded that Kristen would present at the Oscars, "When it's a great movie, not just one that makes a lot of money."
VIEW THE PHOTOS: Oscars 2009: Fashion On The Red Carpet
Artistic integrity at such a young age?!
Kristen Stewart: Nylon February Cover Shoot video