The horses are readied, the Abbey doors are open, and the streets are lined with red, white and blue. Wherever you land, monarchist or not, there's no denying that today is a moment in history. 

Unsurprisingly, we've never found the need to add a 'What to Wear to a Coronation' into our outfit guides, but if we had, these guest looks would certainly feature. As a day that will be immortalised through pictures forever, considering what to wear is just as monumental as attending itself. For attendees, colour was served up abound. From bold shades to pastel hues, the most fashionable attendees truly brought the rainbow to a grey overcast day. 

Here, we're highlighting some of the best outfits we spotted at the Coronation. 

Who: Princess Beatrice

Who: Princess Eugenie

Who: Olena Zelenska 

Who: Masenate Mohato Seeiso, Queen of Lesotho

Who: Lady Helen Taylor

Wear: Dior

Who: Finnegan Biden, Jill Biden

Wear: Markarian (Finnegan), Ralph Lauren (Jill)

Who: Queen Letizia of Spain

Who: Queen Suthida of Thailand

Who: Lady Louise Windsor

Who: Her Majesty Raja Permaisuri Agong Tunku Hajah Azizah Aminah Maimunah Iskandariah of Malaysia

Wear: Manolo Blahnik shoes

Who: Dame Emma Thompson

Who: Sophie Grégoire Trudeau

Who: Pippa Middleton

Who: Katy Perry, Edward Enninful

Up next, Princess Kate Just Wore Her Most-Regal Outfit to Date to the Coronation

We already know all too well that one celebrity wearing something can turn said item into a major trend, especially when that celebrity is someone as influential as Kim Kardashian West or Gigi Hadid. But what happens when multiple celebrities wear the same piece? Well, it becomes *the* trend. At least, that appears to be the case with the pant style that's now been spotted on both of the above as well as on Bella Hadid, Jasmine Tookes and Katy Perry—all in the span of a few weeks. 

The buzzy trend in question? Leather pants, which practically every A-lister seems to be ditching their jeans for this month. The streak started two weeks ago, when Tookes was seen in L.A. wearing a pair of Good American faux-leather pants with Ugg clogs, a black turtleneck, and a matching duster. Then, during Milan Fashion Week, Kardashian West and both Hadid sisters were seen sporting the sleek pant style, all within a few days of each other. Back in L.A., Perry wore a full leather look for an appearance on Jimmy Kimmel Live!. Coincidence? We think not. 

Ahead, see how every well-dressed celeb is styling their new go-to trousers right now. And while you're at it, shop our favorite takes on the trend.

On Gigi Hadid: Versace blazer and shirt; Loewe mules

On Jasmine Tookes: Good American Better Than Leather Good Boy Pants (£182); Ugg Tasman X Waterproof Clog (£70)

WHO: Bella Hadid

On Kim Kardashian West: Prada gloves

On Katy Perry: Aleksandre Akhalkatsishvili top; Bar Jewelry earrings 

Shop the leather-pant trend:

Coming up: The Best Leather Trousers on the High Street

This story was originally published on Who What Wear U.S. and has since been updated.

What do Amal Clooney, Michelle Obama, and Katy Perry all have in common? Well, as Vogue pointed out, they all love wearing the classic Missoni zigzag print this summer. And rightfully so—it's bold, fun, and perfect for the season. Amal wore her variation of the pattern at the airport, Michelle Obama chose another frock while in Italy this week, and Katy opted for a jumpsuit iteration while on vacation. 

Keep scrolling to check out each look!

On Clooney: Missoni dress; Valentino wedges.

On Obama: Missoni dress.

On Perry: Missoni jumpsuit.

What do you think? Do you like this zigzag print? Sound off in the comments below! And don't forget to shop the Missoni print if you're feeling inspired. ASOS also stocks more-affordable variations of the pattern.

Los Angeles tends to be largely overlooked when it comes to its contributions to the fashion community--but not last night! Daily Front Row hosted the first-ever Fashion Los Angeles Awards (which the publication has playfully dubbed the FLAs), honouring a number of designers and other style influencers for their contributions to Hollywood fashion.

Moschino's Jeremy Scott received the Womenswear Designer of the Year award, Calvin Klein's Italo Zuccheli won for menswear, Christian Louboutin won for shoes, Gigi Hadid took home the Model of the Year award, and many more. Some of Hollywood's brightest fashion stars showed up to honour their cohorts, and they lit up the red carpet with some fabulous wardrobe choices.

Keep scrolling to see our favourite looks from the evening!

Rihanna in Moschino

Nicole Richie in Alfredo Villalba and Kwiat jewels

Gigi Hadid in Calvin Klein and Stuart Weitzman

Drew Barrymore in Zara top, Milly skirt, and Dior clutch

Miley Cyrus in Moschino

Katy Perry in Moschino

Do you agree with our picks? Tell us your thoughts in the comments below!

We love a good pair of best friends, but when the besties in question are our favourite stars and the powerhouse stylists responsible for their stellar outfits? Even better. That’s why we rounded up six celebs who are best friends with their stylists, beyond the job. 

Though the stunning blonde besties look similar enough to be twin sisters, they are, in fact, family (Williams and Watts’ brother have one child together). Williams’ Instagram boasts amazing behind-the-scene snaps of Watts getting ready for red carpet events and shots of the two of them striking Vogue-worthy poses all over the globe.

The gorgeous redhead and the woman responsible for landing her on best-dressed lists travel together constantly, with Stewart sharing goofy photos of Chastain getting glammed up for awards shows, events, and editorial spreads. The actress, in turn, recently shared a birthday pic for Stewart reading, "To the most stylish lady out there @elizabethstewart1 #loveyou.” Aww.

A longtime bestie of Kim, Rose has styled nearly every member of the Kardashian family at some point and was one of the honored invited guests at Kimye’s wedding.

Friends for years, Perry and Wujek don’t shy away from professing their undying love for one another, in both the professional and personal realm. Wujek shares #tbt photos with the singer, and a recent Instagram post by Perry dedicated to her bestie read, "To one of my favourite people in the universe @jwujek! You are one of the most loyal, selfless, optimistic, incredibly creative people I know. We are always challenging ourselves and coming up with the craziest/coolest/chicest lewks... And we ALWAYS have fun even if we lose our minds in the process! Thank you for you, I love you.” Tearing up yet?

As perennial travel partners for work and events, Alba frequently shares photos of herself cheesing out with the powerful styling duo, on and off the job. Check their personal Instagram for behind-the-scenes selfies and sweet moments with the chic mum of two.

How do you know if someone is really best friends with a celebrity? If the celeb named them in their ALS Ice Bucket Challenge, of course! Aside from tagging her mega-stylist in her viral video, Huntington-Whiteley frequently hangs out with Coulter in real life, and the two even attended Coachella together. Coulter, for her part, posts covetable outfit snaps of the breathtaking model that you won’t see anywhere else. 

Celebrities, they’re just like us! They, too, revel in the fun that is dressing up for Halloween, and each year the costumes seem to get more extravagant. From the downright creative (Katy Perry as Jane from Daria) to over-the-top glamour (we’re looking at you, Heidi Klum), we present our favourite famous trick-or-treaters.

WHO: Lauren Conrad

WHAT: This adorable Minnie Mouse costume has us hoping the designer actually made her matching dress and bow. 

WHO: Chrissy Teigen

WHAT: The model’s hilarious interpretation of Toddlers & Tiaras­ earns her the covetable title of Ultimate Grand Supreme. 

WHO: Cindy Crawford

WHAT: The supermodel’s version of guitarist Slash is so good it had us doing a double-take. 

WHO: Iggy Azalea

WHAT: Azalea’s high-fashion Cruella De Vil, complete with an actual dalmatian, is spot-on.

Related: 13 It Girl–Approved Halloween Costumes

WHO: Gwen Stefani

WHAT: Once upon a time in Los Angeles, Stefani dressed up as Cinderella with the chicest accessories we’d ever seen. 

WHO: Julianne Hough

WHAT: Hough is a spitting image of beret-clad Bonnie of the outlaw duo Bonnie and Clyde. 

WHO: Rosie Huntington-Whiteley

WHAT: It’s hard to tell exactly what Huntington-Whiteley was going for here, but we give her major props for the flower crown and furry jacket. 

WHO: Paris Hilton

WHAT: The only thing missing from Hilton’s Miley Cyrus MTV VMA costume is the giant foam finger.

WHO: Kim Kardashian

WHAT: Kardashian made a big splash in her mermaid costume at the Midori Halloween party. 

WHO: Katy Perry

WHAT: Is there anything more genius than Perry’s throwback to MTV’s Daria? The answer is no.

WHO: Heidi Klum

WHAT: It’s difficult to pick a favourite Klum Halloween costume, but last year’s Cleopatra might just take the cake. 

WHO: Molly Sims

WHAT: We wonder what part of Sims’ Chiquita Banana number came first: the fruit headwrap or the polka-dot mermaid dress?

WHO: Alessandra Ambrosio

WHAT: No detail was too small for Ambrosio’s sexy Queen of Hearts costume. 

WHO: Ashley Madekwe

WHAT: And the best fashion costume goes to Madekwe for playing Karl Lagerfeld’s cat Choupette.

WHO: Lindsay Ellingson

WHAT: The Victoria Secret model is electrifying as Sandy from Grease.

Which celebrity costume is your favourite? Tell us below!