Kate Middleton supported by Prince William, Countess of Wessex and the Queen at Chelsea Flower Show - best pictures

On Monday night, many members of the royal family arrived in Chelsea to support the Duchess of Cambridge as she unveiled the nature garden during the first day of the Chelsea Flower Show. Kate was joined by the Countess of Wessex, Princess Beatrice and the Queen for the special event. Earlier in the day, the mother-of-three had attended the event with a group of school children to show them her handy-work, that she had co-designed with landscape architects Andrée Davies and Adam White.

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Meanwhile, on Sunday evening, the doting mum was in her element when her three children, Prince George, Princess Charlotte and Prince Louis, were the first to explore the woodland area she had created. The three young children visited the special garden with Kate and Prince William, and had fun swinging from the tree, dipping their feet in the stream and collecting twigs.

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Little Louis, meanwhile, took his first public steps – which were captured in a short video much to the delight of royal fans.

Take a look through the best photos of the evening as Kate's hard work is once again admired…

The Duchess of Cambridge stepped out for the second time on Monday for the opening night at Chelsea Flower Show. Kate looked stunning in a floral print dress, and was supported by her husband Prince William, who looked dapper in a suit. 

Prince William and Kate were in great spirits as they chatted on their way to see the Back to Nature garden once again. 

The Duchess has been very involved in the Back to Nature garden design, and it has gone down a treat with everyone who has gone to visit so far.

Prince Edward was in great spirits at the Chelsea Flower Show, attending the annual event's opening day with his wife the Countess of Wessex. 

The Countess of Wessex looked gorgeous in a green floral dress teamed with white heels as she arrived on Monday evening at the Chelsea Flower Show. 

Mum-of-two Sophie showed off her playful side as she climbed up into the treehouse inside the Back to Nature garden at Chelsea Flower Show - which had been co-designed by the Duchess of Cambridge.

Fresh from their daughter Lady Gabriella Windsor's royal wedding over the weekend, Prince Michael and Princess Michael of Kent stepped out for an evening at the Chelsea Flower Show, reuniting with many of the royal guests from the wedding, including Prince Edward and the Queen. 

The Queen stepped out of the car to go and see grandaughter-in-law Kate Middleton's Back to Nature garden. 

The Queen wore a vibrant green jacket teamed with a floral dress for the Chelsea Flower Show's opening night. 

The Duchess explained to the Queen about the garden, revealing that her children had collected pine cones from their garden at Anmer Hall for it. 

The Queen enjoyed chatting to Kate and William about the garden and was very interested in the large space, noting that you could fit a lot of plants inside it. 

Princess Beatrice arrived with her friend Alice to take a look at Kate's garden on Monday night. 

Princess Alexandra was among the royal visitors on Monday evening.