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Glowing in black-and-white polka-dotted Topshop at the inauguration of the Warner Bros. Studios, Leavesden in London. Kate's $76 dress, like most of what she wears, sold out immediately after she was photographed in it.
Accessorizing her bump with a floral bouquet—and a baby blue Emilia Wickstead dress—at an art event at London's National Portrait Gallery.
We loved this mint Mulberry coat Kate wore to the National Review of Queen's Scouts at Windsor Castle. How sweet are those floral turnlock clasps?
At the Emirates Arena in Glasgow in a pretty plaid coat by Moloh.
Glowing in boldly patterned Erdem while meeting teachers, parents and volunteers at The Willows Primary School, Wythenshawe.
On St. Patrick's Day 2013, Kate appeared in the very same forest green Emilia Wickstead coatdress she'd worn the previous year. A special coat for a special holiday!
Trying her hand at neutral color-blocking at Cheltenham Racecourse in a double-breasted camel coat, brown Stuart Weitzman boots and a matching cocoa-colored hat.
See how the sharp leather cuff accents on Kate's brown Hobbs coat perfectly set off that skinny waist belt? Fashion.
Visiting Hope House in a very bump-friendly patterned wrap dress from Max Mara. (As if the Duchess even had much of a bump going at the time.)
For a visit to the new Tamar Manoukian Outdoor Centre at Dumfries House in Ayrshire, Scotland, the Duchess went with the theme in a red Armani coat and a scarf in Strathearn tartan (a nod to her Scottish title).
Doing it up Private Benjamin-style for a visit to the Great Tower Scout camp at Newby Bridge in Cumbria.
Kate's first official portrait may have turned out somewhat controversial—but the same can't be said of the beautiful cranberry-colored Whistles dress she wore to its unveiling. So pretty.
We feel ya, Kate. We're still obsessed with Peter Pan collars too.
In a By Malene Birger teal coat and jaunty beret, Kate dresses exactly how we would for an afternoon riding the Tube. (Yeah, not quite.)
After being hospitalized for hyperemesis gravidarum, a happier and healthier Duchess emerged wearing this ruffled Diane von Furstenberg coat—and carrying a get-well bouquet from her husband. Aww.
The royal debuted a new 'do (bangs!) in this kelly green silk dress from Mulberry.
With this ivory Roland Mouret gown, all eyes are on #KateMiddletonsRightLeg.
Kate chose this Scottish-chic plaid coat from McQ by Alexander McQueen while greeting some happy schoolkids (foreshadowing!).
Kate takes the peplum plunge in this embellished Matthew Williamson.
Kate thought this pink pleated Emilia Wickstead dress was so nice, she wore it twice.
A bit more bohemian than the Duchess' usual fare, this sheer-sleeved Alice Temperley dress was a definite hit.
Kate took another, more formal Temperley number—a wardrobe repeat!—for a spin at a fundraiser for the University of St. Andrews, her own alma mater.
We love the sculptural neckline of this dove-colored Roksanda Ilincic dress Kate wore to support the British government's GREAT campaign.
A vision in champagne lace Alexander McQueen at a Diamond Jubilee luncheon back in June.
As far as soccer (sorry, football) garb goes, this plaid fit-and-flare Hobbs dress is infinitely more stylish than your standard-issue jerseys and shin guards.
Kate steps out in white eyelet McQueen framed with a peplum—a perfect summertime ensemble.
This kaleidoscopic floral Prabal Gurung dress is perhaps our favorite K. Mid outfit to date. Save for that wedding gown, of course.
Continuing her royal tour of Asia, Kate accessorized her butter-colored eyelet sundress with a festive floral wreath.
Gorgeous and glowing in a pink batik-print dress in the Solomon Islands.
Teach me how to hula (teach me, teach me how to hula).
Covering up in a dress from Beulah London for a trip to the Assyakirin Mosque in Kuala Lumpur.
One of the best celebrity dresses of the year, in our opinion, was this vibrant teal Jenny Packham Kate wore to a pre-Olympics gala. From the sheer lace insets to the flowing chiffon skirt, it's perfection.
The Duchess turned heads in this bold red Alexander McQueen dress (and matching hat!) just before a ceremonial boat ride on the Thames.
For an elaborate dinner in Malaysia, Kate went for full-on glamour in this gilded McQueen gown.
Turns out this dress, from Reiss' Fall 2008 collection, used to belong to Kate's mother. If she can borrow from her mom's closet, ANYONE can.
Officially the classiest St. Paddy's Day outfit we've ever seen.
The sleek, futuristic clutch works so well with her vintagey dress.
Okay, now we sort of want to take up field hockey.
A silk scarf and military jacket later, and it's like she never set foot on the field (her perfect hair and makeup don't hurt, either).
The peplum adds a playful touch to a conservative skirt suit.
Her homemade marigold brooch makes this feminine tweed even sweeter.
The oversized collar and swingy skirt make her waist look extra-tiny.
Stealing the show at the UK premiere of War Horse in a gothic lace Temperley gown.
The hat's even cooler from the side than it is head-on.
Could anything be more black tie than this velvet Alexander McQueen?
A structured jacket and understated accessories make this playful print royal function-appropriate.
Grecian perfection in Jenny Packham at a charity dinner.
The oxblood croc belt is the perfect accent to her boxy red coat.
At her first event sans Wills in October 2011, Kate dazzled in an ethereal embellished gown by Amanda Wakeley.
You'd never believe it, but this stunning gown is off-the-rack.
The perfect white sheath meets the perfect nude accessories.
Nautical somehow works better when you've got a royal naval fleet at your fingertips.
At Zara Phillips' and Mike Tindall's July nuptials, Kate challenges her new cousins-in-law for the top spot in the royal hat race.
A sharp accordion-pleated skirt helps dress up her laid-back Whistles crocheted top.
Take a cue from Kate and wear a soft, muted floral to your next summer party.
Only the Duchess can truly pull off a white cowboy hat.
Kate gave a nod to American fashion by wearing this kelly green Diane von Furstenberg at a summertime dinner in Los Angeles.
Kate changed into this dove grey Roksanda Ilincic dress at 35,000 feet, somewhere between Canada and California, in July 2011.
Kate wore this suit to a reception at the Calgary Zoo. Yeah, that's right—a zoo.
This Jenny Packham frock is so Betty Draper (pre-Bugles binges and quilted housecoats) in the best possible way.
The ruffled blouse and sharp Smythe blazer lend skinnies and wedges serious polish.
A gold grosgrain ribbon makes this structured By Malene Birger sheath so much more festive.
The only couple in the world who can get away with matching hoodies.
Can't you just see Jordan Baker from the Great Gatsby wearing this McQueen knit dress?
The deep cerulean blue of this appliquéd Erdem sheath suits her so perfectly.
The sharp collar adds a touch of whimsy to this classic Catherine Walker sheath.
Kate returns to Issa (who made her unforgettable engagement dress) with this grape-colored style.
The hat perfectly conveys "I'm in Canada on Canada Day" (which she is), but we're just as drawn to that Asian-inspired half-moon clutch.
Kate makes her Canadian debut, the picture of elegance in Erdem.
Navy on navy on navy on navy. So right.
The Duchess at Wimbledon, totally redefining the phrase "tennis whites."
The hat looks like it came off some sort of mythical fairytale bird.
Brocade doesn't look too old-fashioned when it's this well-cut.
Standing out in black and white at Trooping the Colour, an annual British military ceremony.
The Duchess chose Jenny Packham again—this time, an all-over beaded column—for the June 2011 ARK gala.
The short, swingy skirt moves this suit to a spot exactly halfway between traditional and modern.
Kate turns to her signature blue on her first full day as the Duchess of Cambridge in 2011.
Two years later, Kate's Sarah Burton for Alexander McQueen wedding dress is no less breathtaking.