Kate Middleton proved her environmental chops at tonight's Earthshot prize green carpet as she stunned in a gorgeous powder purple dress as she first wore in 2011.
The Duchess of Cambridge, 39, joined Prince William at Alexandra Palace in London.
To match the event's ethos and highlight on sustainability, the mother-of-three recycled a dress she first wore ten years ago in 2011, at a Bafta reception in Los Angeles while she and Prince William were touring America as newly-weds.
The dress, by the late designer Alexander McQueen, is cinched at the waist with a dazzling golden belt.
The pale lilac colourway and delicate pleating perfectly complemented delicate frame. Known for her effortless style and poised looks, the royal wore her hair in her signature bouncy blow-dry with a light curl while opting for a glamourous make-up look.
She's hardly aged a day! Kate Middleton proved her environmental chops at tonight's Earthshot prize green carpet as she stunned in a gorgeous powder purple dress as she first wore in 2011.
Kate has a close afflation with Alexander McQueen having worn the British fashion house's designs on notable occasions, most famously to her wedding in 2011.
Her Royal Highness first donned the dress at a BAFTA black-tie event at the Belasco Theater, one of the first events of this kind she experienced after tying the knot with William in April 2011.
Known for her effortless style and poised looks, the royal wore her hair in her signature bouncy blow dry while a light curl while sport a glamourous make-up look
Her Royal Highness added a defined highlighter and bold red cheek and change from her usual natural look.
Her Royal Highness first donned the dress at a BAFTA black-tie event at the Belasco Theate (left) one of the first events of this kind she experienced after tying the knot with William in April 2011. Right today
Pick pleats like the Duchess of Cambridge in a gown by Alexander McQueen
As we move towards a more sustainable way of shopping and dressing, we've taken to raiding through our wardrobes and repurposing the pieces we'd all but forgotten about. Today the Duchess of Cambridge inspired us to do exactly that when she re-wore an Alexander McQueen gown she first wore in 2011.
Kate's relationship with the British designer long pre-dates her wedding, in which she wore a dress designed by McQueen creative director Sarah Burton. A decade later and this beautiful bespoke McQueen piece is every bit as breathtaking as it was the first time round! Kate completed her look with her favourite Kiki McDonough special edition morganite earrings.
From the pale lilac colourway to the delicate pleating, this dress is the stuff of dreams. Unfortunately the custom nature of it means that we can't get our hands on one for ourselves, but you can shop a similar McQueen gown in black at NET-A-PORTER. Simply click the image to take a closer look!
Alternatively, head to the carousel where you'll be met by a line-up of similar styles. From Self-Portrait to SHEIN, we've got a gorgeous pleated frock to suit every style and budget.
Meanwhile William, who created the Earthshot Prize with the Royal Foundation, looked dapper as he moved away from the classic black tuxedo instead opting for a black polo neck and and green velvet jacket.
Kate sported a discreet but effective makeup, with just a dash of blush to complete her healthy complexion. She donned a nude lipstick and a sprinkle of mascara.
She also kept the accessories scarce, with her cascading tresses revealing a pair of golden hoop earrings, which were her only piece of jewellery apart from her wedding ring.
The Duke of Cambridge and Duchess of Cambridge arrive at the BAFTA Brits To Watch event held at the Belasco Theatre in 2011
Kate is pictured in 2011 with Prince William during a tour of the US in LA
Tonight is the first ceremony in Duke of Cambridge's decade-long global environmental competition with a set of A-list judges set to join the show which will see winners handed £1million for an idea to protect the planet.
Sir David Attenborough, who has supported the project from the beginning, is a member of the Earthshot Prize council, which will choose the winners.
Judges include actress David Attenborough, Cate Blanchett, singer Shakira and Queen Rania of Jordan.
William and David Attenborough will also present a new BBC show about the environment featuring pioneers who have been recognised for finding innovative solutions to the most pressing climate issues.
Kate Middleton stunned today in a gorgeous powder blue dress as she joined Prince William at Alexandra Palace in London on the green carpet for the first ever Earthshot Prize Awards Ceremony
An exciting and star-studded group of internationally recognised performers, presenters and Earthshot Prize guests will be joining William and Kate.
These global stars will arrived via a green carpet, before taking their seats in Alexandra Palace’s stunning East Court Theatre for the ceremony, which will be broadcast this evening at 8pm on BBC1.
The event will be a celebration of the natural world, focussed on turning the current pessimism surrounding environmental issues into optimism by celebrating the people and places driving change – the first-ever Earthshot Prize Finalists and Winners.
The stars of the show will be the five inaugural winners of The Earthshot Prize who will be announced during the ceremony, which will celebrate the ingenuity of all 15 Earthshot Prize Finalists and their extraordinary work to tackle the challenges posed by climate change and the threats to our oceans, air, and land.