Princess Kate Plays Monster on Secret Play Date with Prince George – in Matching Mommy-and-Me Outfits!
"She was flailing her arms about and chasing him," an onlooker tells PEOPLE
It’s not every day that a princess pretends to be a monster.
In her first public sighting since welcoming Princess Charlotte on May 2, Princess Kate visited London’s Holland Park last weekend with her 22-month-old son, Prince George, where she joined the ranks of moms to play that time-honored (and tiring!) game of chase: monster.
On Sunday morning, a playful Kate, 33, was spotted entertaining her rambunctious toddler at the picturesque park, a 10-minute drive from the family’s residence at Kensington Palace.
“It looked like she was pretending to be a monster, flailing her arms about and chasing him,” an onlooker tells PEOPLE exclusively.
“She was play-acting just like all mums do and he was running around loving it – he looked very happy,” the onlooker adds.
Fashion-wise, the pair were sweetly in sync for the cold, wet morning: “They had matching waxed-green coats on, similar to a Regatta [brand], and dark jeans with boots. They both looked matching!”
“He looked like such a happy lad, being chased by his mom and enjoying the swings, slides, roundabouts – they were going on everything. They looked just like any other mom and toddler. ”
As for Kate’s antics, it reminded the observer of a certain Disney film. “It was a bit like Monsters, Inc.,” says the park-goer. (We’re thinking more along the lines of Shrek‘s Princess Fiona.)
The observer also adds that Kate showed no sign of newborn exhaustion: “They both looked really well.”
Want to keep up with the latest royals coverage? Click here to subscribe to the Royals Newsletter.