King Charles might be a workaholic , but when it comes to Prince George, Princess Charlotte and Prince Louis, he shows his softer side. Charlotte, who turned 11 on May 2, is growing in confidence as she prepares to follow in her big brother’s footsteps at boarding school . The princess was spotted touring Oundle School with Prince William and Princess Kate earlier this month, but for the next two years, she’s got plenty of time to enjoy being a kid—including rare quiet moments with her grandpa. In an exclusive interview with Hello! magazine , royal biographer Robert Jobson said that Charlotte “enjoys a close relationship” with King Charles. “He totally adores her,” the author said. “She loves it when he reads to her in his funny voices.” It seems to be a special talent of The King, as in 2017, Queen Camilla revealed her husband’s “brilliant” ability to imitate voices when reading to her own grandkids. "Sometimes, when we are with my husband in Scotland, he reads them Harry Potter," she told the Daily Mail .…