Today, the Duke and Duchess of Cambridge and Prince Harry were at the Queen Elizabeth Olympic Park in east London to attend the launch of Heads Together - a new campaign to end mental health stigma.
Heads Together is the biggest project the royal trio have undertaken together and will see them working in partnership with a number of mental health charities, including Kate's patronage, Place2be.
For the launch, Kate donned a new skirt by American fashion retailer, Banana Republic - a brand we have never seen her wear before.
She wore the label's Geo Jacquard Midi Skirt (US$138), featuring a geometric pattern in a mix of navy, teal and white. The a-line midi skirt has a pleat at the front and is rendered in jacquard cotton.
Kate paired the skirt with the Goat Fashion 'Binky' blouse in cream (£290) - also a new addition to her closet.
She supplemented the ensemble with navy suede accessories. Kate carried her LK Bennett 'Fromme' clutch, and on her feet were the Rupert Sanderson 'Malory' pumps.
She finished the look with her Sapphire & Diamond Oval Drop 'Diana' Earrings and Cartier Ballon Bleu watch.
REPLIKATE THE LOOK FOR LESS ...