This is the first time we've seen the Duchess in such a style. The dress is signed by Brazilian designer Barbara Casasola.
Another surprising style of Middleton last week was the plastic crown she wore in her hair. Beaming at the 80s, the Duchess wore her hair back with a crown, which she always parted on both sides.
Whether Middleton's style is a wind-soed measure or a search for a new style will show in the coming days.
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