United Kingdom, Oct. 8 -- Christy Carlson Romano has accused Mandy Moore of being a "mean girl" at a wrap party for The Princess Diaries.

The 42-year-old former child star has recalled being invited to a "wrap party or something" for the 2001 classic, where she had an awkward exchange with Mandy and her co-star Heather Matarazzo.

Mandy played cheerleader bully Lana Thomas in the movie, while Heather played Mia Thermopolis' (Anne Hathaway) quirky best friend Lily Moscovitz.

Appearing on Page Six Radio, Christ claimed: "I knew Heather from doing something for MTV in New York City before she was, like, hitting it big with this new feature film.

"So I go up to Heather and I'm like, 'Hey, do you remember, we worked together.' And Heather w...