Kate Middleton and Prince William, 38, attended a talk about mental health for families during the coronavirus pandemic. The Duchess of Cambridge sat at the table in a garden, meeting mental health experts.
Along with the images their Instagram account posted a lengthy caption.
It read: “Over recent months we have all been in awe of the incredible work that frontline staff and emergency responders have been doing in response to COVID-19.
“And we know that for many of them, their families, and for thousands of others across the UK, the pandemic will have a lasting impact on their mental health.
“Today The Royal Foundation of The Duke and Duchess of Cambridge has granted nearly £1.8 million to 10 leading charities at the heart of mental health and frontline support through a bespoke fund set up as part of the organisation’s response to COVID-19.
READ MORE: Kate and William unveil £1.8m fund to support incredible workers on coronavirus frontline
Along with the mystery dress, Kate wore her favourite wedges, the Castañer Carina wedge espadrilles, £150.
She wore a new bracelet, the Stéphanie Cuff by Sézane.
The pretty piece is gold plated brass with natural stones and costs £75.
The Duchess wore her Daniella Draper Cupid Hoop earrings, which cost £350.
Kate Middleton wore a polka dot white and black gown to meet families for a BBC initiative.
The Emilia Wickstead Anatola pleated polka-dot crepe shirtdress was worth £1,565, but had 70 per cent off in the sale, making it just £469.
She wowed in a stunning designer dress for the event which has already sold out online.
The belted shirt dress featured a midi design with long sleeves and a pleated skirt, in a bold monochrome polka dot design.