Prince George gives his verdict on his mum Kate Middleton's RHS Chelsea Flower Show garden in this adorable clip.
The young prince's charming reaction was recorded as he and his siblings played in the Back To Nature Garden ahead of the show's opening day.
After his father asked him what he thought of it, a proud George awarded it a glowing score of "Twenty".
The Duchess of Cambridge also revealed her hopes it would encourage youngsters to get out and explore nature.
She told the BBC that technology-obsessed youngsters were "missing out" and added that her children were dragged to play outside come "rain or shine".
Kate Middleton, Prince William and the Queen all smiles at Chelsea Flower Show
The garden features a tree house, swing seat, waterfall, rustic den and a campfire as well as tree stumps, stepping stones and a hollow log for children to play on.
It was also revealed that the Duchess was involved at every stage of the design - including the difficult gardening work.
Earlier today she looked relaxed and casual, as she wore a white shirt, camel-coloured wide leg trousers during the visit, just a day after her own children enjoyed a playful trip to the garden.
Kate Middleton beams at sweet surprise during George, Charlotte and Louis's garden trip
She met youngsters in activities around the garden - such as making boats from reeds - that demonstrate some of the creative and active skills that children can learn from being in the great outdoors.
On Sunday, Prince George, Princess Charlotte and Prince Louis spent almost an hour playing in their mother's garden, as shown in six candid images taken by Matt Porteous and released by Kensington Palace.
Adorable pictures showed the youngsters exploring the installation on Sunday, ahead of the public unveiling.
Kate Middleton breaks important rule with latest snaps of George, Charlotte and Louis
Older siblings Prince George, five, and Princess Charlotte, four, were seen dangling their bare feet over a stream of water as the family look happy.
In one clip, a grinning Louis, who celebrated his first birthday in April, toddles along with a branch in his hand as dad Prince William smiles and keeps a close watch over him.
The footage was captured using hidden cameras to allow the royal youngsters to play naturally.
Casual Kate Middleton arrives at Chelsea Flower Show - and climbs into treehouse
Princess Charlotte excitedly screeches in the heartwarming clip, jumping onto a rope swing and looking thrilled as she explores.
The Duke of Cambridge can be heard in the background encouraging his children saying "well done, brilliant!"
The video came hours after Kensington Palace shared heartwarming pictures of George, five, Charlotte, four and Louis, one, inside the woodland-themed creation.
Kate's involvement with the 2019 RHS garden at the Chelsea Flower Show was first revealed earlier in the year.
Kate hopes the space will inspire families "to get outside" and "enjoy nature" and will highlight the benefits the natural world brings to mental and physical well-being.
It was co-created alongside landscape architects Andree Davies and Adam White and the Royal Horticultural Society (RHS).
