When it comes to their baby, Lilibet Diana, Prince Harry and Meghan Markle have one major concern.

The Duke and Duchess of Sussex are expected to be "written out of royal history" after the birth of their second child in June 2021, according to a royal pundit.

According to Neil Sean's YouTube channel via Express, "it appears that both Harry and Meghan worry that their daughter is going to be re-written out of history."

"This is because, rationally speaking, when are they going to return?" he continued. "When will there be a chance to have a formal portrait taken with our kind monarch?"

"And at 96 years old, they have to look logically at it," he added. "So, will Lili ever get the opportunity to see her great-grandmother again?"

According to the royal expert, the fact that Prince Harry and Meghan Markle posted the photo on Lilibet to the public was their way of saying that it is their kid and she is someone others are missing out on.

Sean further indicated that Queen Elizabeth II's unwillingness to allow a photograph of herself with her great-granddaughter irritated the former royals, adding that Buckingham Palace declined to disclose whether or not they met with Her Majesty.

However, it was stated that there was an intimate moment together.

Unlike Lilibet Diana's elder brother Archie Harrison, Lili, the one-year-old, was born in the United States.

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Lilibet and Archie traveled to the United Kingdom with their parents last month to celebrate Queen Elizabeth II's Platinum Jubilee.

During her first visit to the UK in June, Prince Charles allegedly had a "very emotional" first encounter with her grandchild.

The future King was "extremely pleased" by Prince Harry and Meghan Markle's visit with their daughter and son, according to a royal insider.

For Prince Charles, spending time with three-year-old Archie was a "really precious" occasion.

Prince Harry and Meghan Markle announced in January 2020 that they were stepping down from their senior royal jobs in order to live a financially independent life away from the spotlight. They settled in the United States two months later, and by June, they had purchased a home in Montecito, California.

The former "Suits" star's visit to the UK last month was her first since stepping down from her royal post.

READ MORE: Prince Harry, Meghan Markle 'American Dream' Harming Their Kids?