"We want people to still be able to create the characters in their heads, but with our backgrounds, how could we not add a little moviemaking?" asks Goldberg, who first worked with the director as one of the associate producers of the "Charlie's Angels" film.
And next up for the duo?
"We thought we'd be writing the sequel by now, but we didn't realize how much work goes into promoting the first book," says Hopper.
The pair also has been challenged by planning outfits for all of its press events. "I'm more bohemian," says Hopper — who often wears Flower Child-era pieces inherited from her mother, "Zabriskie Point" actress Daria Halprin — "and Amanda's more classic and elegant." (For instance, she often wears her mother Wendy's Chanel.)
Of course, just like with "The Devil Wears Prada," there could also be the ultimate Hollywood ending — a movie version of the book.
Sighs Goldberg: "Wouldn't that be a dream come true?"