Photo: Steve Parsons/PA Images/Getty

Festival of British Eventing - Gatcombe Park

Mia Tindall has only been abig sisterfor about six weeks, so she’s learning the ropes from older cousin Savannah Phillips.

The royal duo, along with Savannah’s younger sibling Isla, spent Friday at a family outing to the Festival of British Eventing at Gatcome Park. They stayed cool with ice cream treats, 4-year-old Mia opting for a frozen popsicle while her cousins spooned the dessert out of a cup.

Meanwhile,MikeandZara Tindallappeared to stay home, likely with their new addition,Lena Elizabeth, who was born on June 18. The couple had previously lost another child after Zara suffered a miscarriage. Zara revealed earlier this week that she had asecond miscarriagebefore welcoming Lena.

Steve Parsons/PA Images/Getty

Festival of British Eventing - Gatcombe Park

Festival of British Eventing - Gatcombe Park

Mike recently told PEOPLE thatlife as a family of four has “been brilliant so far.”

Andrew Matthews/PA Images via Getty Images

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RELATED VIDEO:The Queen’s Granddaughter Zara Tindall Welcomes Second Child After Suffering Miscarriage

Mia may want to be careful what big sister advice she takes from Savannah, who has been known to have a naughty side.

When the royal family gathered on the Buckingham Palace balcony to watch theTrooping the Colourflypast, the youngest members couldn’t help but be in awe of the spectacle overhead.Prince George, 5, offered his applause sparingly, his dropped jaw gave a better indication of how he felt about the big event, meant to celebrate theQueen’s official birthday. ButQueen Elizabeth‘s great-granddaughter Savannah wanted her cousin to keep it cool, so shepromptly placed her right hand right over the future king’s mouthwhen he started to giggle.

Savannah knew the cameras were on her, too, as she flashed a sly smile and deadpanned those watching. DadPrince Williamcaught the moment as well, and seemed none too pleased!

Savannah Phillips and Prince George.James Whatling/MEGA

Trooping the Colour 2018

Trooping the Colour 2018.James Whatling/MEGA

Trooping the Colour 2018

Savannah Phillips and Prince George.Karwai Tang/WireImage

Maserati Royal Charity Polo Trophy

One day later, the cousins cheered onPrince Williamat hischarity polo matchin Gloucester, England.

During the playdate, which included running around the field and playing with a Slinky, the daughter of William’s cousinsPeter Phillipsplayfullypushed George down a hillwhen he attempted to sit next to her.

source: people.com