Prince Harry and Meghan Markle on Monday made what's expected to be their last appearance as senior royals ahead of their planned step back. Harry and Meghan, alongside other members of the British royal family including Queen Elizabeth II, attended Commonwealth Day service at Westminster Abbey. Last week, Harry and Meghan made their first official joint appearance since they announced in January that they would "step back as 'senior' members of the Royal Family," attending the Endeavour Fund Awards in London. Harry and Meghan are set to officially step back as senior royals on March 31, and they are expected to fly to Canada now that their final duty is complete.