Kate, the attraction's patron, exuded glamor during the performance and opted for a chic black blazer with puff sleeves and matching top and trousers.
She completes her ravishing look with a pair of minimalist pearl teardrop earrings and has her hair blown out in her signature waves.
It is the first time the awards ceremony will be virtual due to the continuing coronavirus pandemic. Filming an address in the famous Hintze Hall, she says, "It is so wonderful to be back at the reopened Natural History Museum, where we can all enjoy its treasures once again".
"The skill and creativity of this year's images provide a moving and fascinating insight into the beauty and vulnerability of life on our planet", the duchess will say. "This competition attracts the very best in wildlife photography". The ceremony also encourages millions of people around the world to rethink their relationship with nature and become advocates for the planet.
The victor has been selected from over 49,000 entries from around the world by a panel of worldwide experts, this year's winning images will be exhibited at the Natural History Museum on 16 October 2020 before touring across the United Kingdom and internationally.
The Duchess is Patron of the Natural History Museum. Big shoulders are a style we tend to associate with that decade, and while Kate's blazer is a slightly subtle version of the trend, it still spiced up her all-black outfit and convinced us to invest in one of our own.