allegedly left "furious" over a set of photos published during her time as a working royal, it has been claimed.
The Duchess of Sussex on March 6, 2020, just days before her and Prince Harry stepped down as senior working royals on March 31.
But sparked after she reportedly insisted on having them published on the same day as the Queen was set to make a long-planned speech on domestic violence.
The photos in question were posted on the now-defunct Sussex Instagram account and showed Meghan dressed in white inspecting London's National Theatre's Immersive Storytelling Studio.
According to an insider, Meghan was accused at the time of trying to "steal Camilla's limelight" with the gesture allegedly leaving the Queen "very upset".
They told the that Meghan was asked by senior royals to delay the release of the photos and not "overshadow" Camilla's speech, but the duchess "refused to listen".
The insider said: "Camilla's work is very important to her and her decision to highlight the scourge of domestic violence at the 10th anniversary of Women of the World was a carefully thought-out plan.
"Of course it was known Harry and Meghan would be doing engagements this week, some privately, but everyone was in agreement that Camilla's speech should take p recedence. Unfortunately some people had other ideas."
The post, which is unavailable to view due to the Instagram account being closed, featured the caption: "Yesterday, The Duchess of Sussex, Royal patron of the National Theatre, visited the Immersive Storytelling Studio in London, where emerging technology like Virtual Reality is being used to develop new forms of emotive storytelling.
"Recently, The Duke and Duchess of Sussex also visited Stanford University where part of their learning journey included a virtual reality presentation that allows the user to experience life through another person's point of view.
"The goal of this method of virtual reality is to enable us to better connect and empathise with each other as people, regardless of race, age or nationality.
"The Duchess is pictured here with Nubiya Brandon and her hologram, featured in the National's exhibition 'All Kinds of Limbo', which is currently being presented at the Tate Modern."
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