Despite Meghan Markle and Prince Harry's decision to step back from their royal roles, the British monarch has limited power when it comes to stripping royal titles.

Harry and Megan — who, Page Six is told, insist on being called "Ma'am" and "Sir" by staffers — have also used their HRH titles when traveling, sources said.

Prince William reportedly plans to strip Meghan Markle and Prince Harry of their HRH tiles when he becomes king, over concerns that Meghan has violated an agreement with the late Queen Elizabeth