The dinner was hosted in The Orangery at Kensington Palace. As per the Court Circular, the Duke and Duchess of Cambridge attended a charity lunch function for The Royal Foundation earlier in the day.
Kate arrives at @AFNCCF Gala Dinner this evening. Speaking with @katesilverton1 on arrival pic.twitter.com/1P8a7T49Jd
— Victoria Murphy (@byQueenVic) November 7, 2017
Before the dinner, Kensington Palace said,” Earlier this year Her Royal Highness, who is Patron of the AFNCCF, visited the center’s Early Years Parenting Unit to learn more about their work with families who have children under five years old. This visit marked the Duchess’ continued desire to draw attention to child mental health issues and the importance that early intervention, and working with the whole family, can make to those in vulnerable situations.”
The event was hosted to celebrate the new £39 million Centre of Excellence currently under construction on Rodney Street in Islington. The Centre of Excellence will for the 1st time bring under 1 roof, the very best of science, education & mental health support for families.
The conceptual model of the center was exhibited last night. Kate Silverton broadcaster and child mental health campaigner was the compére of the evening.
The Duchess met key supporters of AFNCCF at a reception, including families who benefit from the charity.
For her first Gala of the season, The Duchess of Cambridge brought her elegant Diane von Furstenburg Zarita Gown back. If you remember we saw this gown in 2014 at Royal Variety Performance when Catherine was expecting her second child Princess Charlotte.
The black delicate lace gown crafted from sheer lace has a fitted bodice and waist with a fluted hem. The gown features a subtle waistline with a front neckline in boat shape with a back deep vee neck.

A look at the elegant gown.
The Duchess of Cambridge paired the gown with Queen’s dazzling diamond pendant earrings featuring a pendant of separate stones hanging within a diamond frame.

From Her Majesty’s Jewel Vault, “The wide diamond bracelet features multiple diamond quatrefoil motifs, the four-lobed design popular in architecture, art, heraldry, and elsewhere. Each quatrefoil outline is filled with five individual diamonds.”

Catherine was seen carrying a black Prada clutch and supported Buckley poppy.