Duchess of Cambridge stuns at Chelsea Flower Show evening reception with Prince William

The Duchess of Cambridge looked stunning in a floral gown as she arrived for the Chelsea Flower Show’s evening reception with Prince William.

The Queen also attended the Royal Horticultural Society’s evening event wearing a lime green coat, and was joined by other members of the Royal Family.

The Duchess was seen nervously tidying up the walkways by her “back to nature” garden before the arrival of the Queen.

She could be seen picking up stray leaves and twigs before stuffing them into her handbag.

The efforts did not go unnoticed by her Grandmother-in-law who remarked that the garden was “very tidy”.

Prince George also told his mother that he would mark her efforts as “20 out of 10”.

The Queen enjoyed a personal guided tour of the most high-profile garden at this year's show.

The Duke of Cambridge was also on hand as the Queen visited the Back to Nature garden which Kate helped to design.

The duchess explained the features of the garden to the Queen, including its hand-built tree house and rope swing.

And it has already had a visit from some enthusiastic young royals - William and Kate's three children.

Prince George, Princess Charlotte and Prince Louis played on the rope swing and climbed into the treehouse during a visit on Sunday that lasted almost an hour.

As the three walked across the wooden decking that bridges the garden's central water feature, designed as a woodland stream, the Queen remarked that it was a wonder the garden's designers could fit so many features into a small space.

Kate, 37, swapped a pair of culottes for a bold Erdem evening frock as she returned to the show for the second visit on Monday.

The Duchess of Cambridge ha visited her woodland wilderness garden, named Back to Nature, earlier today.

Her project will open to the public on Tuesday, aiming to encourage more children to spend time outdoors.

Earlier on Monday, she also joined group of school children around the campfire in the Back to Nature garden which is filled with fairy tale features including a treehouse, waterfall, stepping stones, a hollow log for children to play in and a campfire.

The mother-of-three previously said spending time outdoors can help children grow up to become "happy, healthy adults".

Kate said it is "heart-breaking" that there is a "long way to go" to realising this wish, which she said is shared by all parents.

The Back To Nature Garden, co-created alongside landscape architects Andree Davies and Adam White, and the Royal Horticultural Society aims to highlight the benefits the natural world brings to mental and physical well-being.

The garden forms part of Kate's ongoing work on early childhood development.

Speaking ahead of the garden unveiling, she said: "In recent years I have focused much of my work on the early years, and how instrumental they are for outcomes later in life.

"I believe that spending time outdoors when we are young can play a role in laying the foundations for children to become happy, healthy adults."

In her letter to the steering group, Kate wrote: "Through our work, you have reaffirmed my belief of just how timely it is to focus on what happens in the early years of life, and how pivotal a stage of life this is for a child's future."

Additional reporting by the Press Association.