With more than 40 years of experience and involvement in hundreds of charities and organizations, Princess Anne certainly knows a thing or two about being a productive working royal. In a rare interview with Vanity Fair, the soon-to-be 70-year-old Princess Royal, famously the only daughter of Queen Elizabeth II and Prince Philip, reflected on her life's work as a member of the British royal family and what it means to her to serve, particularly as a new generation of royals rise up. "It's not