"This never happened", a royal spokesperson told The Sun.
Reports have suggested that Kate was upset by Meghan's demanding manner over Charlotte's bridesmaid dress this spring.
Teacher Sarah Daniels, 43, said: "As I was looking at the shelves I noticed a tall dark-haired lady further down the aisle and thought to myself "I recognise that face".
At another point, Kate who was dressed casually in a tweed jacket and jeans, referred to her daughter Charlotte as "poppet".
Many had brought bouquets of flowers or had got in the Christmas spirit by wearing Santa hats. "It helps to keep a grandmother well occupied", the Queen said in her annual speech.More news: US Troop Withdrawal Will Help Further Afghan Peace: Qureshi
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Earlier in the day the Queen and other members of the royal family braved the December weather to attend a Sunday service at the Sandringham Estate.
The 92 year old monarch goes on to also mention her son, Prince Charles' 70th birthday milestone last month.
The pregnant royal has certainly honed her curtsying skills in a year.
Queen Elizabeth's husband, Prince Philip, 97, was absent from the church service, as was Prince Charle's wife, Camilla, who is recovering from a cold.
In the video above, Markle can be seen performing the song alongside her classmate and fellow future-actress, Natalie Fryman. He reportedly gave her the name to match the strength and determination she displays.