Jennifer Meyer was issued with the warning surrounding the images by Buckingham Palace, the Daily Mirror reports. The photos include Meghan in jewellery from Ms Meyer. She wore the pieces throughout the year at various royal engagements.
Amongst the events were the unveiling of her first child Archie to the world and when she met Archbishop Desmond Tutu.
Reports suggest there were 12 images of the Duchess of Sussex on Ms Meyer’s Instagram.
The images had links to Ms Meyer’s Jennifer Meyer Jewellery website attached to it.
These have since been deleted.
A royal source claimed: “Jennifer Meyer has been told to remove the images and in no uncertain terms how damaging this could be for Meghan and the Royal Family.”
Royal and fashion experts waded into the debate surrounding the controversial snaps.
Ingrid Seward, editor-in-chief of Majesty Magazine, said: “Meghan has again blurred the line between celebrity and royalty.”
Jason Panudy, of PR experts Goldbug, said: “There can be little doubt Jennifer Meyer’s brand will benefit.”
Harry mentioned how transformative the charity has been for the community and how it is both a “powerful and meaningful process” that he is proud to be a part of.
The post was accompanied by multiple photos of both Meghan and Harry giving speeches, and of people taking part in sporting activities.
The post read: “Today we are taking a look back at the amazing work done by the @EndeavourFund, an organisation created by The Duke of Sussex to support the Armed Forces community.
“HRH was motivated by the ambitions of wounded, injured and sick (WIS) service personnel and veterans across the UK, who wanted to use sport and adventurous activity as part of their recovery. And what they choose to take on is extraordinary!”
The inspiring post included examples of men and women from around the world who have broken records and defied the odds.
The post continued: “These men and women break global records and set goals for those around the world – non-disabled and disabled alike, including:
“The first amputee to cross Greenland icecap unsupported, the first triple amputee to qualify as a rescue diver, the fastest unsupported rowing time across the Atlantic, and so many more.
“The endeavours they take on are inspirational, but also have a tremendous impact on their physical, emotional and social recovery, as well as a lasting effect on the family and community around them.
“Since launching in 2012, the Endeavour Fund has supported nearly 6,000 WIS in sport and adventure challenges.”
Prince Harry said in the post: “The magic of the Endeavour Fund is that it enables those who had life changing injuries in their prime, many of whom felt defeated, to use the power of sport to find a new purpose.
“The renewed self-belief we see in everyone who participates, and how this transforms their lives and the lives of those around them is overwhelming.
“Beyond that, each man or woman who participates uses their endeavour as an opportunity to raise funds for another serviceman or woman who needs the same support they once did.
“It’s a powerful and meaningful process that I am so proud to be a part of.”