How petrol blue became the Duchess of Cambridge's new wardrobe neutral

Since Pantone announced its 2020 colour of the year in December, ‘classic blue’ has been the hue on everyone’s lips.

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Kate Middleton visits the Foundling Museum wearing blue outfit

Kate Wears Cambridge Blue as She Comes Face-to-Face With Lifelike Portrait

How petrol blue became the Duchess of Cambridge's new wardrobe neutral

Experts Reveal the Strategic Reason Why Prince William & Kate Middleton Often Wear Blue Clothes

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Meghan Markle Opens Up About Wearing Neutral Wardrobe Around Royal Family

Duchess Meghan Markle's best maternity fashion moments

Why does Catherine, Duchess of Cambridge repeat outfits when she can afford not to? - Quora

The Duchess at 40 Part 3: Touring and Tiaras – What Kate Wore

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