The Royal Family are missing out on spending Prince Harry's 36th birthday with him, but they wouldn't have been able to even if he was in the UK, a royal expert has claimed.

The Duke and Duchess of Sussex likely spent the day at home with their one-year-old son Archie Mountbatten-Windsor and wife Meghan Markle in Santa Barbara in the US.

Royal expert Brittani Barger told Daily Star Online she thinks Doria Ragland, Meghan’s mum, may have come over to celebrate with the pair, and Harry talked to his family in the UK on video chat.

Ms Barber said it is likely Prince William, Prince Charles and the Queen called Harry but will no doubt "miss not being able to celebrate him" in the UK.

The Royal Family are missing out on spending Prince Harry's 36th birthday with him

But, as Ms Barger points out, Prince Harry wouldn’t be able to spend his birthday with the family even if he were in the UK right now.

She said with Boris Johnson's new "rule of six" coronavirus regulations, "he couldn't have spent his birthday with many family members".

Ms Barger told Daily Star Online: "I'm sure The Queen will call him, as will his father and brother.

Prince William and Prince Charles wished Harry a happy birthday

"I'm sure they will miss not being able to celebrate with him.

"But with the new restrictions in the UK of only six people, he couldn't have spent his birthday with many family members."

The Duke of Sussex turns 36 today – September 15 – the same age Princess Diana was when she died in a horrific car crash in Paris.

Prince Harry likely spent his birthday with wife Meghan Markle

Brittani Barger of Royal Central told Daily Star Online she thinks "being the same age as his mother when she died will cross his mind".

She said would be "only natural" for the Duke to "think about her on the day and miss her terribly".

Ms Barger added Harry is likely to look to the future and "continue to make her proud" as he "lives the life she couldn't" with his family past 36.