Some of the scenes of Anna walking red carpets, flashing her famous smile at the cameras and attending award shows is real Roberts footage "from years gone by," she shared with

Some of the scenes of Anna walking red carpets, flashing her famous smile at the cameras and attending award shows is real Roberts footage "from years gone by," she shared with E! News in 1999, as well as footage shot at the 1998 BAFTA Awards, which in real life she attended with her My Best Friend's Wedding co-star Rupert Everett.

Overall, the scenes that illustrate what a huge star her character is are a "hodgepodge" of her life and Anna's, Roberts said.

What was not real, Roberts was thankful for, was the scene in which Anna opens the door of Will's flat to countless paparazzi snapping away—surrounded by, in what Grant called a "Fellini moment," dozens of actual paparazzi photographing the fake photographers.

"It's always fun if you can exaggerate a situation, thank goodness," Roberts said. "I've never opened a door and seen 500 people...so yeah, it's certainly enjoyable."

Richard Curtis found the opening montage largely lifted from Roberts' actual movie-star life more startling: "We said, 'F--k! That's who we're dealing with,'" he told Vanity Fairin 1999. "It's very easy when you're dealing with a very reasonable, lovely, relaxed, 30-year-old woman to forget that that's also the Julia Roberts who, for 10 years beforehand, you could never have gotten within a hundred yards of. It was a freakish moment when we realized that the woman we were dealing with was actually both those things: this relaxed person and this untouchable, iconic object of which there are so many photographs."