When Kate Middleton visited her old school, St. Andrews in 2012, she revealed that she and sister Pippa were given nicknames that just stuck.
While Kate's birth name is Catherine, and her title now is the Duchess of Cambridge, her classmates had other ideas.
The Mirror reported that Kate told students that the school guinea pigs were called 'Pip' and 'Squeak'. Given that her sister was 'Pip', her friends started calling her 'Squeak', she revealed.
'Squeak' is a much smaller name than she's used to with all her fancy titles, so we don't blame her for letting it stick!