The Queen and the Duchess of Cambridge carried out their first joint engagement outside palace walls. Kate, 37, and the Queen, 92, shared a blanket in the back of the car as they pulled up at King's College London, where they reopened Grade II-listed Bush House.
The Duchess was elegant in a grey Catherine Walker coat, believed to be a new bespoke addition to her wardrobe, which she teamed with her new favourite £510 Gianvito Rossi block heels and a black Mulberry clutch.
In a rare move for such an outing, Kate, 37, completed her outfit with a hat, which is likely to be a sign of respect to the monarch.
Read More from The Daily Mail.It is the same hat she wore when out with the Queen in Leicester in 2012. Meanwhile the Queen, 92, plumped for a rose pink cashmere coat by Stewart Parvin and matching Rachel Trevor-Morgan hat with beautiful floral detailing at the brim.