Kate Middleton through the years

Published On: Jan 01 2012 01:31:14 AM CST   Updated On: Jan 09 2015 01:00:00 AM CST

With the Catherine, Duchess of Cambridge, otherwise known as Kate Middleton, celebrating her 33rd birthday on Friday, join us for a look at her through the years.

Kate Middleton through years - dog
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David Cheskin - WPA Pool/Getty Images

Kate Middleton strokes a dog during a visit to St. Andrews University on Feb. 25, 2011.

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