The Duchess of Cambridge's parents, Carole and Michael Middleton, do join the 92-year-old monarch at church for Christmas morning service, before returning to nearby Amner Hall for lunch with Kate and Wills and their three children - Prince George, Princess Charlotte and Prince Louis.
Life & Style's royal insider tells, "Kate accused the Queen of giving special treatment and sees this as a huge snub to her side of the family."
"She understands that most of Meghan's family is estranged rom her and that this was a kind gesture, but it still hasn't stopped her from thinking that Prince Harry's wife has got it easy."
The Royal Family is yet to respond to Life & Style's report.