Prince Harry and Duchess Meghan leave Windsor Castle after their wedding

They will officially step down as senior royal members on March 31

Harry And Meghan Say Goodbye To Instagram - See Their Emotional Final Post Here!

Queen Elizabeth II may currently be in self-isolation at Windsor Castle, but she's likely mourning a special person in her life today. That's because as Hello! mentions, March 30th of this year marks 18 years since her mother, Queen Elizabeth the Queen Mother, passed away.

The Queen Mother died in her sleep at her Windsor residence, Royal Lodge, on March 30th, 2002. Buckingham Palace confirmed that her passing had occurred at 3:15 pm, with her daughter Queen Elizabeth II by her bedside.

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Queen Elizabeth II has statement issued in 2002 "with the greatest sadness"

Queen Elizabeth's statement following the death of her mother was a simple one, issued by a palace spokesman on her behalf. "The Queen, with the greatest sadness, has asked for the following announcement to be made immediately: her beloved mother, Queen Elizabeth, died peacefully in her sleep this afternoon at Royal Lodge, Windsor," it read according to Hello!. "Members of the royal family have been informed."

The statement went on to share how the Queen Mother's condition continued to decline after Christmas, during which she had experienced a "bad cough and chest infection" before addressing the circumstances of the Queen Mother's death. "Her condition deteriorated this morning and her doctors were called," the statement explained. "Her condition deteriorated this morning and her doctors were called. Queen Elizabeth died peacefully in her sleep at 3.15 this afternoon at Royal Lodge. The Queen was at her mother's bedside".

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Queen Elizabeth II shares sweet throwback photo with mum

While the Queen Mother died 18 years ago, Queen Elizabeth continues to remember her beloved mum today! On Mother's Day in the UK last week, she shared a previously unseen photo of the two of them, taken in the 1950s back when she was still Princess Elizabeth. Even though it's been years since her passing, it's clear that the memory of Queen Elizabeth the Queen Mother still lives on in her daughter's heart!