Although he is the heir apparent to the British throne, the patron or president of more than 420 charities, and a husband and father, Prince Charles is also a doting grandfather. His eldest son Prince William has previously described him as being "brilliant" in his familial role, and it's clear Charles takes his job very seriously.
HELLO! takes a look at some of Charles' sweetest grandfather moments with Prince George, Princess Charlotte, Prince Louis and Archie.
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In April, the royal posted a beautiful photograph to celebrate his second youngest grandson Prince Louis's special day.
The black and white snapshot, which appeared on the official Clarence House Instagram page, showed Charles smiling as he hugged Louis, who had his arms wrapped tightly around his grandfather's neck.
The loving bond between the pair is crystal clear, and the caption for the image read: "A very Happy Birthday to Prince Louis, who turns two today. The young Prince enjoys a hug from his Grandfather, The Prince of Wales."