Seyfried has several nude scenes in the new Atom Egoyan film about infidelity, and one extremely intimate love scene with co-star Julianne Moore.
SLIDESHOW: The lovely and talented Amanda Seyfried.
"My dad's not allowed to see [the movie]," Seyfried told us. "Being nude is not really much of an issue, I don't think for any of us really. It's easy just to take off your clothes but its really the intimacy that's ... challenging."