Blunt reflected on the cast's experience filming the 2006 movie during a conversation with former co-star Anne Hathaway.
The "Ocean's 8" star said the ageist comment was made to her when she was just a child actor.
The “She Came to Me” actor said she believes her former co-star is “very busy.”
“Need to party with Anne Hathaway DESPERATELY,” one Twitter user said.
The actor spoke about the incident following the premiere of her new movie "Eileen."
Anne Hathaway is returning to Genovia for a third “Princess Diaries” movie.
A third "Princess Diaries" movie is in development? Shut UP!
People have criticized the character, played by Adrian Grenier, for years.
The defining interaction occurred nearly 10 years ago, according to the "Mindy Project” actor.
Some might call it a "groundbreaking" choice on Hathaway's part.