1Trooping the Colour 2011
Getty ImagesFor her debut Trooping the Colour in 2011, Kate decided to coordinate with her new step-mother-in-law Camilla in a tailored, white coat dress.
2Trooping the Colour 2011
Getty ImagesUnlike Camilla, who kept her whole look light, the Duchess accessorised with a black hat to create this chic monochrome situation.
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3Trooping the Colour 2011
Getty ImagesHer dress/coat was made by Alexander McQueen and featured a tiered skirt and padded shoulders.
4Trooping the Colour 2012
Getty ImagesAnother Trooping the Colour, another chance to coordinate with Camilla. In 2012, the pair opted for a light blue colour palette.
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5Trooping the Colour 2012
Getty ImagesThis time, Kate matched her millinery with her dress and wore a light grey clutch to complement the look, too.
6Trooping the Colour 2012
Getty ImagesHer printed Erdem dress was a slight departure from Kate's usual love of colour-blocking.
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7Trooping the Colour 2013
Getty ImagesA pretty pregnant Kate in 2013 arrived at the Trooping the Colour ceremony with Camilla as usual, who was wearing cream.
8Trooping the Colour 2013
Getty ImagesKate had previously worn her hat before, at one of the Queen's garden parties in 2012.
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9Trooping the Colour 2013
Getty ImagesHer super-cute collared coat with pearl buttons was custom-made for the mum-to-be by Alexander McQueen.
10Trooping the Colour 2014
Getty ImagesFor the first year, Kate and Camilla strayed a bit from their matchy matchy outfits. Although both were still in pastels.
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11Trooping the Colour 2014
Getty ImagesKates blazer and skirt were made by Alexander McQueen - are you noticing a theme here?! - while her hat was Jane Taylor.
12Trooping the Colour 2015
Getty ImagesFor her first appearance since giving birth to Princess George, Kate Middleton went for a floral blue coat to blend well with Camilla's green.
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13Trooping the Colour 2015
Getty ImagesShe wore perhaps her biggest hat yet!
14Trooping the Colour 2015
Getty ImagesHer coat was made by Catherine Walker - one of the late Princess Diana's favourite designers.
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15Trooping the Colour 2016
Getty ImagesBy 2016 Camilla and Kate were back to matchy matchy, with each lady selecting a cream coat to wear on the occasion.
16Trooping the Colour 2016
Getty ImagesKate wore an old coat dress by Alexander McQueen, that she previously wore at Princess Charlotte's christening, and huge pearl earrings.
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17Trooping the Colour 2016
Getty ImagesThe Duchess used her pink hat to coordinate with Princess Charlotte, who was also in pink, and Prince George who wore a pastel blue.
18Trooping the Colour 2017
Getty ImagesKate went for her most colourful and striking look yet in 2017, in this millennial pink (kinda) number.
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19Trooping the Colour 2017
Getty ImagesThe dress is by Alexander McQueen (obvs) and we're obsessed with everything about this look - including the matching hat by Jane Taylor.
20Trooping the Colour 2017
Getty ImagesOnce again, the Duchess coordinated with her two children who looked adorable as always.

Jess Edwards is Cosmopolitan UK’s Deputy Editor, working to deliver the very best experiences across the brand's platforms (print, social, video, digital), products and events, including a focus on our membership offering, Club Cosmo. Jess has worked in the media industry for almost 20 years and at Cosmopolitan for over 10 years, joining the brand as Fashion Editor and later going on to lead the digital team as Site Editor. With her background in lifestyle journalism, it is no surprise that you’re most likely to find her in the Fashion section and exploring the very best in hospitality via our Travel pages.
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