Prince George may have cheeks for days, but this recent remark from the Duchess of Cambridge reveals something even cuter.
In a promo for UK's ITV special called Our Queen at 90, the Duchess says that Prince George calls his great-grandmother "Gan-Gan". How sweet!
"George is only 2-and-a-half, he calls her Gan Gan," she says, referring to Queen Elizabeth II.
The show is due to air this Sunday in the UK, in the run up to the Queen's 90th birthday.
But the young Prince's nickname has got us thinking. What do people call their (great) grandmothers in other cultures?