Kate Middleton and Prince Harry had a close bond pre-2020 royal exit.
Meghan and Harry's invite to UK Christmas festivities is doubtful due to recent controversies.
Royals used to exchange joke gifts at Christmas, including Harry.
gave Harry an unforgettable Christmas gift.
Kate gave Harry a 'grow-your-girlfriend' kit as a funny present.
Presents are opened in Sandringham's white drawing room on Christmas Eve.
The gift was given when Harry was single, before dating Meghan.
Harry and Kate had a sibling-like bond, but it changed after their exit.
Sussexes' damaging remarks about the royal family caused the shift.