After wowing the world in an elaborate gown at a state dinner earlier this week, Kate was seen in a simple Everly Preen $1065 dress.
Showing off her new shorter hairstyle, Kate was spotted at the reopening of Hintze Hall at the Natural History Museum in London.
The Duchess wandered the museum along with Sir David Attenborough.
Kate accessorised her dress with black Prada strappy sandals.
The Duchess took to the stage for the event, telling the audience that she remembered visiting the museum as a child.
"now, as a parent myself, I am experiencing the joy all over again with my own children, who adore coming here - and it is not just to see the T-Rex, mind you," Kate told the crowd.
Kate’s sapphire and diamond engagement ring – that once belonged to Diana – would cost around AU$508K to make today.