Before she was engaged to Prince William and became one of the most recognizable, polished and photographed women in the entire world ...
... she was plain and simply Catherine Middleton.
As the first commoner to marry an heir in centuries, it's no wonder that Kate Middleton has captivated millions of fans the world over.
Here's a photo gallery through the years.
Vintage Kate Middleton and Prince William
Kate Middleton and Prince William back when they first started dating. Such an adorable picture ... and such a head of hair he used to have!
Kate Middleton as a Baby
Kate Middleton as a baby girl in 1982, with her proud father Michael.
Kate With Mum
Who would've guessed that little bundle would grow up to be royalty! Well done, Carole.
Kate Middleton as a Kid
A beautiful, vintage photo of Kate Middleton as a young school girl.
Kate and Pippa Middleton as Kids
Kate and little sister Pippa with father Michael Middleton in the mid-1980s.
Kate Middleton Childhood Photo
An adorable childhood photo of Kate Middleton, the girl who would be queen.
Kate is Not Amused
William probably still gets this look from time to time.
Kate Middleton in Grade School
A young Kate Middleton looking absolutely adorable in an early school photo.
Kate Middleton Playing Field Hockey
Kate Middleton was always a good athlete, as seen here playing field hockey in school.
Kate Middleton in College
A photo of Kate Middleton as a college girl. Man she was as beautiful then as she is now ... not a shocker we suppose.
Kate Middleton Graduation Photo
A glowing Kate Middleton on the day of her graduation from university.
Old School Kate Middleton Pic
An old school pic of Kate Middleton, looking like the beautiful young woman she's always been.
Old School Kate Middleton Picture
An older photo of Kate Middleton, before she was the celebrity she is today.
Kate Middleton Picture (Old School)
This is Kate Middleton. She is Prince William's girl. For life!
Kate Middleton Partying
Once again ... can you imagine Kate Middleton going out to the bars like this in 2014?!
Kate Middleton Partying Photo
A photo of Kate Middleton enjoying the nightlife in London, before she was the celebrity she is today. Can you imagine her partying like this nowadays?!
Kate Middleton, Bikini
Kate Middleton looking gorgeous as ever in a bikini photo from 2006.
Kate Middleton in a Bikini
Kate Middleton looking gorgeous as ever in a bikini photo from 2006. The future Queen is a true beauty.
Kate Middleton Bikini Picture
Kate Middleton looking gorgeous as ever in a bikini photo from 2006. She's got an amazing body.