Britney Spears may have suffered a lot of hard knocks, but it’s not enough to earn her the moniker “rock star” — at least not according to Stevie Nicks.

“You have to pay dues to be a real rock star,” the former Fleetwood Mac singer told Extra! recently. “Britney did not join a band when she was 18 and practice every day for five hours Monday through Friday and then play gigs Friday, Saturday and Sunday.”