Once again, Kate wore an outfit from her own wardrobe. She wore a well-tailored, classic and flattering red suit with a black velvet belt. The designer has not yet been identified. She again wore her black stretch suede boots from the American brand, Aquatalia, designed by Marvin K and sold in the UK by Russell & Bromley.
After much searching, I have finally found the earrings that Kate was wearing.
They are Kiki McDonough from her 'Grace Collection.' The earrings are set in white gold with a white topaz center stone surrounded by diamonds.