She will one day be Queen Consort beside her husband Prince William, but already Catherine, Duchess of Cambridge is one of the most watched women in the world.
As a member of Britain's royal family, she often poses for official portraits and looks immaculate on her various tours and official engagements but every so often a photo of Kate emerges that shows a side we rarely see.
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Whether it's a cheeky smile, a moment where she's caught off guard or something dug up from the Middleton family archives, royal fans love nothing more than seeing a new picture of the duchess.
Granted, there aren't many photos we royal fans haven't already seen of Catherine as she is very accustomed to having her picture taken.
"Every picture editor in London wants a full-length photograph of her because she looks so elegant and stylish," The Sun's royal photographer Arthur Edwards once mused.
"Every day she is machine-gunned by photographers but not used to posing," Paolo Roversi, the photographer who snapped her iconic 40th birthday portraits, observed in 2022.
From her early years as a sporty schoolgirl through to her life as a royal mum-of-three today, see the best forgotten photos of the Duchess of Cambridge.
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