Buckingham Palace followers will recognise the mother-of-three's cream and gold gown from the couple's Diamond Jubilee Tour of Malaysia.
Creative director Sarah Burton was commissioned by the royal to create the bespoke look for a dinner with the King and Queen of the nation.
Last year, the Duchess of Cambridge reigned the red carpet in a sweeping one-shoulder gown by the British fashion house.
Proving she has always been a thrifty dresser, the 38-year-old chose a pair of pearl earrings, which once belonged to Princess Diana, to complete the look.
This article originally appeared on InStyle Australia.