Princess Charlotte, 11, looks all grown up in new Father’s Day photo with dad Prince William

“Happy birthday and Father’s Day to the best Papa in the World! We love you very much. C, G, C & L 💕,” the post was captioned.

Additionally, the father of three’s 44th birthday also landed on Sunday, and he was celebrated by his father, King Charles III.

“Happy Birthday to the Prince of Wales,” the monarch, 77, captioned a photo of himself with his son via his Instagram Stories.

William and his wife, Kate Middleton, also 44, share daughter Charlotte, along with sons Prince George, 12, and Prince Louis, 8.

The family celebrated Father’s Day after making a united appearance at the Trooping the Colour in London, England, earlier this month.

Charlotte, George and Louis were all smiles while waving to onlookers during the parade before posting up on the balcony of Buckingham Palace.

Middleton and William also stepped out to the Royal Ascot, a horse racing event, outside of London last week.

The royal couple turned the outing into a date day, as Middleton dressed up in a yellow gown and matching brimmed hat, while William wore a tailcoat and top hat.

The duo wed in 2011 at Westminster Abbey after six months of being engaged.

They recently celebrated 15 years of marriage in April.

Middleton and William marked their milestone anniversary with a sweet family photo of themselves with their kids.

The snap showed the family of five lounging on the grass with their dog, talking and holding hands.