Sparkling like the Crown Jewels in a glittering floor-length Jenny Packham dress, Kate stepped out with husband William to the Tusk Foundation gala dinner at The Royal Society in London.
She looked fresh, radiant and dazzling with her luxurious locks carefully curled around her shoulders. The Duchess finished her look with her favourite Jimmy Choo heels and diamond jewellery.
And William – who has recently complained about the stress of being a new dad - looked just as smart in a black tie and dinner jacket.
William is a patron of the Tusk charity whose awards aim to celebrate outstanding achievement in the field of African conservation, recognising the achievements of individuals who are ensuring the future of Africa and bringing the challenges faced by the continent to a global audience.
In a speech during the event, the Duke said: "As you might have gathered, Catherine and I have recently become proud parents – of a baby who has a voice to match any lion's roar!
"This is actually our first evening out without him, so please excuse us if you see us nervously casting cheeky glances at our mobile phones to check all is well back home."
Turning to the theme of the awards, he went on: "Like any new parents, our thoughts inevitably turn to the world that our child will inherit. It is unfathomable to imagine a world in which children who have been born in the past couple of months may grow up in a world in which rhinoceros have ceased to live in the wild.
"The possibility of extinction is bad enough for one of our children growing up here in the West, who will never experience the magic of seeing a rhino on a new television documentary; or even for my own dear George, who Catherine and I very much hope to introduce to east Africa, a place we know and love, in the fullness of time."
William and Kate are now making final arrangements for their move into Kensington Palace, which will become their London base after leaving Anglesey following the Duke of Cambridge's decision to quit his job as a helicopter pilot.
The couple, who went to live with Kate's parents, Michael and Carole Middleton, at their £4.8 million mansion in Bucklebury, Berkshire after the birth of Prince George, are to say goodbye to the island that has been William's home for three years, or two for Kate.