And now a royal fan has posted a video on Twitter which shows a very positive warmth between the sisters-in-law. Well-wishers brought bouquets of flowers for the family and wished them a Merry Christmas as they walked by.
Most of the royals were in attendance, except for the Duke of Edinburgh and the Duchess of Cornwall.
Prince Charles, the princes' father, accompanied the quartet on the walk into the church but Charles' wife, Camilla, did not attend.
George is said to have shown interest in a £1.25 Dinosaur Baby Egg Slime in the toy aisle, but Mrs Daniels "didn't register a response" from the prince's mother.
Following the service, the Royal Family greeted a large crowd outside the church.
Media playback is unsupported on your device Media captionTatenda aged seven'I like Meghan... she wears elegant dresses
When her followers asked what they spoke about, she replied: "Meghan said she was excited, there wasn't long left to go".
Reports have suggested that Kate was upset by Meghan's demanding manner over Charlotte's bridesmaid dress this spring.
Sales of the photo have allowed her to clear her debts and take a year off from work.
The Duke and Duchess of Cambridge's children, Prince George, Prince Charlotte and Prince Louis, weren't in the snaps, indicating they were not present at the event, and their great-grandfather, Prince Philip, was also absent from the morning.
Her Majesty also gives Christmas trees each year to Westminster Abbey, St Paul's Cathedral, St Giles' Cathedral and the Canongate Kirk in Edinburgh, as well as churches and schools in the Sandringham area.
Meghan Markle has mastered the art of the royal curtsy.