"It was a struggle to find the right person to play this key part in such a short period of time," Seyfried says. "It's so frustrating to care about the well-being of someone (Moore) but also try to fill their shoes. It's been such a weird experience."
Seyfried even helped the producers once they zeroed in on Parker.
"I called (Parker's) agent and said: 'I really want her. I know this is all last-minute,' '' Seyfried says. "I knew she'd be amazing."
Parker says that once she took the part, the two spoke by phone — and the activist was positive about the casting.
Steinem "was very generous," Parker says. "I don't know if someone was telling her to be polite. And of course I hadn't done anything at the time, so it was theoretical."
Her first scene was the 1980 meeting between the former Linda Lovelace and Steinem in Steinem's Ms. magazine office. Wearing a tan maxi-sweater that went to her calves and a long blond wig, the Sex and the City star spoke her first line as cameras rolled: "Hi Linda, I'm Gloria Steinem."
Parker says that evoking the famous name and the lengthy dialogue scene that followed was "a baptism by fire."
"It's one thing to appear, but to actually have to announce in the 11th hour of a movie that I'm Gloria Steinem, that was a little intimidating."