The royal family's silly and affectionate nicknames unveiled from 'cabbage' to 'Spike'

ok.co.uk:

We might know her as Her Majesty, or Ma'am, but the Queen has several nicknames bestowed on her by her family. Known as 'Lilibet' since childhood after struggling to say Elizabeth, Prince Philip calls her 'cabbage', while her great grandson Prince George and his siblings call her 'Gan Gan'.The funniest, however, is ‘Gary’.

When he was little, William had a hard time trying to say ‘grandma’ and Gary was the name that came out instead.This became public when a guest who asked who Gary was, assuming it must be a member of the royal household, was told ‘I’m Gary,’ by the Queen. ‘He hasn’t learned to say Granny yet.’ Prince George himself is called 'PG Tips' by his parents and was referred to as their 'little grape' when the Duchess of Cambridge.