"My biggest problem is bloggers," Stewart said of her modern struggles, compared to Jett's burden of breaking into the boys club of rock music.
For being a girl playing guitar, "Joan had bottles thrown at her," Stewart marveled.
"What she has now is a thick, developed armor," Stewart said. "She's in tune with herself, honest, and has a self-preservation thing."
And about those pesky bloggers, perpetuating a maybe-romance with "Twilight" leading man Robert Pattinson?
"Hearsay is sometimes really awesome and sometimes really destructive," she said. "I don't care."
— Matt Donnelly
Photo: Kristen Stewart banters with photographers at "The Runaways" premiere Sunday in Park City, Utah. Credit: Chris Pizzello / Associated Press.