And one royal expert believes this move was "pretty rude" by both Harry and Meghan.
Prince William turned 37 on June 21 and wishes from across the world poured in for the Duke of Cambridge.
Sussex Royal wrote in the comment section: 'Happy Birthday to The Duke of Cambridge!'
All, except for the Duke and Duchess of Sussex, who, in the early morning they were yet to post anything on their official account.
The Royal Family Twitter account, which shares updates on the Queen and other senior members, celebrated William's birthday by sharing a collage featuring several images of the prince from different stages of his life with his grandmother, Queen Elizabeth, and his wife, Kate Middleton.
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He was quickly consoled by the New Zealand fielders and was given a lengthy standing ovation by the packed crowd. Ross Taylor contributed 69 and bowling for West Indies Sheldon Cottrell took 4/56 and Brathwaite took 2/58.
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"Thank you everyone for your lovely wishes on The Duke of Cambridge's birthday!"
"Meghan without Harry would have been well-known, so she's bound to have more opinions about her PR, how they promote themselves as a couple, what they do with their kids".
Set up in 2009, the Royal Foundation focused on causes close to the princes' hearts, including the armed forces, conservation and mental health.
This also comes a day after it was announced officially that Harry and Meghan are splitting from the Cambridges' Royal Foundation and instead, setting up their own personal charity.
William, 36, is second in line to the throne after his 70-year-old father Prince Charles, while Harry, 34, is a distant sixth.