Kate Middleton owns two pairs of Alessandra Rich’s Fab slingback pumps. She wears them in beige/black and white/back.
Here’s Kate wearing them in white/black at Wimbledon in July 2022:
And in beige at the Grenfell Tower memorial service in June 2022:
About the slingback pumps:
The toe-tone pumps are crafted from leather and feature a contrasting pointed toecap.
The shoes feature a Mary Jane-style strap and a mid-size heel (8.5cm).
They’re made in Italy.