02:47 PM EDT 01/12/2016
Originally posted 01/11/2016 02:05PM
Princess Kate is rarely captured mid-curtsy, but on Sunday she was snapped doing just that in a respectful pose with her grandmother-in-law, Queen Elizabeth II.
Princess Kate Brings the Whole Family to Sandringham for Her Birthday Weekend – and Shows Off Her Curtsey to the Queen
Originally posted 01/10/2016 10:00AM
It was a family and friends affair for Princess Kate's birthday weekend.
Originally posted 01/08/2016 10:45AM
From roller disco queen to royal princess!
Originally posted 01/09/2016 09:45AM
It's written in the royal stars!
Prince William and Princess Kate Set to Meet the 'Will and Kate' of the Himalayas During Visit to Mountain Kingdom
Originally posted 01/08/2016 09:30AM
Originally posted 01/06/2016 01:00PM
Sharpen your pencils – Prince George is off to school!
Two Milestone Birthdays and a Big First Day of School! What's in Store for Prince William and Princess Kate in 2016
Originally posted 01/04/2016 11:25AM
The royal family is set for another big year!
Originally posted 12/27/2015 10:30AM
It's a royal day out!
Originally posted 12/25/2015 02:55PM
Princess Kate is gorgeous in green!
Top 5 Most Voted Stories
Kardashian Pals Malika and Khadijah Haqq: We're Voting for Kanye West for President!
Medical Examiner Confirms YouTube Star Caleb Logan Bratayley Died of Undetected Heart Condition
This App Lets You Build the Perfect Fake Boyfriend
Justin Bieber Arrested After ATV Accident
Brandi Glanville Calls Her RHOBH Costars the C-Word: 'I Didn't Get Fired'
Top 10 News Categories
The most buzzed about stars this minute!
Treat Yourself! 4 Preview Issues
More On PEOPLE.com
Got a News Tip?
Send it to our People.com editors!