In a deep blue coat dress, Kate Middleton captures all eyes on Commonwealth Day

Pillbox hat and matching coat were essentials in Jacqueline Kennedy's wardrobe.

However, Kate Middleton appeared with these same codes this second Monday in March at Westminster Abbey for the annual Commonwealth celebration.

Her long coat dress, designed by the tailoring workshops of the house founded by French designer Catherine Walker in Chelsea, was, along with her pillbox hat, the star pieces of a monochrome cobalt blue silhouette.

Deployed shoulders, tuxedo collar, lapel pockets, the Duchess of Cambridge also discreetly played with this outfit of masculine-feminine codes, which were complemented by navy blue pumps and a pill box hat with bow detail.

Jackie Kennedy's signature accessory, the pillbox hat has established itself over time as an essential part of the Duchess's wardrobe.

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Kate Middleton arrives at the Commonwealth Day service at Westminster Abbey (London, March 14).

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gold and azure

Only the gold of her finery and her black leather gloves stood out in this great blue.

The set repeated feature by feature the colors of the Commonwealth flag composed of a symbol resuming the letter C in gold on an azure background.

By wearing a creation by Catherine Walker, Princess Lady Diana's favorite stylist, Kate Middleton also paid a subtle tribute to her late mother-in-law.