Savannah Phillips and Prince George.Photo: DANIEL LEAL-OLIVAS/AFP via Getty Images

Prince Georgemay be the future monarch, but his older cousin Savannah Phillips is known for keeping him humble…and giggling at the worst times!
Queen Elizabeth’s eldestgreat-grandchild, the daughter of Prince William’s cousin Peter Phillips and his ex-wife Autumn, celebrates her 11th birthday on Wednesday. Savannah has charmed royal fans duringequestrian events with her family(after all, both her grandmother Princess Anne and aunt Zara Tindall have competed in the Olympics) and is asweet big sister to 9-year-old Isla, but she has a cheeky streak that often involves 8-year-old Prince George!
The duo first caught the attention of royal watchers at the 2018 Trooping the Colour festivities. As the royal family gathered on the Buckingham Palace balcony to watch the flypast,Prince Georgecaught a case of the giggles — prompting Savannah tocover his mouthand flash a deadpan look, seemingly knowing the cameras were watching. She was also seen placing a finger over her mouth to shush the future king.
Savannah Phillips and Prince George.Chris Jackson/Getty Images

Just one day later, Savannah and George reunited to cheer on Prince William at hischarity polo matchin Gloucester, England. During the playdate, which included running around the field and playing with a Slinky, Savannah playfullypushed Prince George down a hillwhen he attempted to sit next to her.
Savannah’s joking didn’t end there — she was also spotted ruffling George’s hair when he wasn’t looking.
Savannah Phillips and Prince George.Karwai Tang/WireImage

The cousins were back to goofing off atPrincess Eugenie’s wedding in October 2018, where they served as members of the bridal party.
WhenPrincess Eugenieand Jack Brooksbank shared theirofficial wedding portraits, Savannah can be seenplacing one foot on the trainof the bride’s gown as she smiled for the photo.
Princess Charlotte, Savannah Phillips and Prince George.YUI MOK/AFP/Getty

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Prince Williamrecently opened up aboutChristmas with the royals, including that one of his favorite parts was bringing the family together.
“When I see my children meet up with my cousin’s children, and they all have a wonderful time playing together, it’s very special,” he said. “I look forward to that a lot.”
source: people.com