The Duchess was in her green Catherine Walker coatdress for today’s engagement at the Royal Chelsea Flower Show.
HM wore pieces by Angela Kelly for her 51st visit to the Flower Show.
The Royal Family
It’s the first trip to the show for William and Kate. 
William, Kate and Harry at the #RHSChelseaFlowerShow pic.twitter.com/NtUyPiNAEC
— Emily Nash (@emynash) May 23, 2016
Harry has previously attended the event; below you see Kate and her brother-in-law looking at an English rose exhibit. 
There was no shortage of royals at the event. Sophie of Wessex wore a floral print by Alexander McQueen.
Princesses Eugenie and Beatrice arrived with their boyfriends and close friend Holly Branson. 
Also at the Flower Show this afternoon (but not seen in photos here), the Duke of Kent and Prince and Princess Michael of Kent, and the Gloucesters.
This year there were many special displays/exhibits/events related to the Queen’s 90th birthday. Below, a profile of HM.
This angle shows the Queen, Royal Patron of the Flower Show, looking at the camera from the other side of the display.
The Royal Family
Emily Nash of Hello!