Duff explained a 30-year-old Lizzie McGuire wouldn’t have needed scandal — but it would need authenticity Hilary Duff didn’t want to shy away from portraying Lizzie McGuire as an authentic adult — whatever that might mean. The actress revealed her take on why Disney pulled the plug on its once-slated Lizzie McGuire reboot in a conversation with Women’s Health. “She had to be 30 years old …