Happy Birthday, Duchess Kate! See photos of the royal family through the years

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Tuesday, January 8, 2019
Will & Kate's royal family through the years
Will & Kate's royal family through the yearsFrom graduations to engagements, weddings and pregnancies, we've watched Prince William and Duchess Kate grow up and start their family before our very eyes.

LONDON -- After a big year for the royal family, Wednesday is all about the Duchess of Cambridge, better known as Kate Middleton. She's turning 37!

From graduations to engagements, weddings and pregnancies, we've watched Prince William and Duchess Kate grow up and start their family before our very eyes.

Now they're a family of five. Last April the couple welcomed their third child, Prince Louis. The little one is fifth in line to the throne, behind big siblings Prince George and Princess Charlotte.

In the video above, take a look back at their major family milestones.

PHOTOS: Will & Kate through the years

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The Duchess of Cambridge during a visit to Evelina Children's Hospital in London on Tuesday, December 11, 2018.
Chris Jackson/PA Wire via AP

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