Tina Fey sat down during her cover shoot for Variety’s Power of Women issue to discuss “Mean Girls” — both the musical and the original film.

She revealed that one of her real-life Regina George moments ended up in the film and the show: Her freshman year of high school, a girl told her she was pretty. After she said thanks, the girl asked, “So you agree? You think you’re really pretty?”

Fey also talked the process behind creating a musical.

“The hardest part about writing a musical is just the stamina you need to work on the same thing for five years,” she said. “And to know that it’s going to gestate and change and to not get too precious about anything two years in cause it’s gonna be a totally different beast five years in, which is where we are.”