"I remember being like, 'If I told 10-year-old Olivia, she'd be like, shut the f--- up, you're lying,'" she said.

Olivia Rodrigo used to write fanfiction about One Direction. Years later, she shared how a meetup with Harry Styles went.

NPR's Scott Simon talks with Washington Post reporter Rachel Kurzius about fan fiction, which is changing publishing —from books inspired by "Twilight" to an award-winning take on "Huckleberry Finn." ...