Kate Middleton through the years

POSTED: 11:31 PM PST Dec 31, 2011    UPDATED: 11:00 PM PST Jan 08, 2015 
Royal family trip to Australia, Kate Middleton, Prince William, George

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.