Kate Middleton's birthday message to Prince Harry has been mocked after royal fans claimed they had spotted a telling link behind the photo.The Duchess of Cambridge wished her brother-in-law a happy 36th birthday on Tuesday as she dug out a throwback picture of the pair of them engaged in a race with Prince William.In the photo, the married pair are trailing Prince Harry at a public event the trio attended at the Queen Elizabeth Olympic Park in 2017.But some fans think the seemingly innocent snap may have a hidden meaning.They think it is a nod to Harry leaving the Royal Family after he moved to the US with wife Meghan Markle earlier this year.One wrote: "I think it's hysterical that they chose one of Harry running away with William and.
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