As one would expect, the stakes are high when it comes to mapping out a royal wedding guest outfit that would garner even Queen Elizabeth II's stamp of approval. Naturally, any old sundress from the back of your closet simply won't do, and A-list guests over the years have pulled out all the stops for their royal wedding day looks. From elaborate fascinators to bold (knee-length!) dresses and overcoats, guest apparel certainly proves that weddings of royal proportions ain't your standard nuptials (as if we didn't already know that...).
We took a look at some of the best-dressed guests of royal weddings past from around the world. Perhaps you can garner some wedding guest outfit inspo of your own from these previously worn looks, featuring appearances from Victoria Beckham to Nancy Reagan.
Princess Beatrice kept her outfit simple for Prince Jean-Christophe Napoleon Bonaparte, a descendent of Napoleon Bonaparte I, and Countess Olympia von und zu Arco-Zinneberg's French royal wedding in October 2019. She paired a floral-printed dress with a pale blue trenchcoat and a pink wide-brimmed hat. However, we argue her best accessory was her newly-minted fiancé Edoardo Mapelli Mozzi on her arm.
While this won't be the only Pippa Middleton made this list, we love the Kate Spade dress she wore to Lady Gabriella Windsor's wedding on May 18, 2019. The light blue floral frock was perfect for a springtime nuptials and the velvet headband was a refreshing accessory in a sea of royal wedding fascinators and hats.
Just a few months after her own "I dos," Meghan Markle arrived at St. George's Chapel for Princess Eugenie and Jack Brooksbank's wedding wearing a navy blue ensemble. The outfit was designed by Givenchy, Meghan's royal wedding dress designer!
Kate Middleton also attended Princess Eugenie's royal nuptials wearing her wedding dress designer—Alexander McQueen. The Duchess chose a pink long-sleeve dress and matching fascinator for the autumn occasion.
Model-turned-actress Cara Delevingne rocked a fitted tuxedo and top hat to Princess Eugenie's October 2018 nuptials. For a royal wedding, the look was completely unexpected.
Monochrome appeared to be the popular trend among A-list guests at Princess Eugenie's wedding. A then-pregnant Pippa Middleton bared her growing baby bump in an emerald green outfit.
Prince Carl and Princess Sofia of Sweden
While attending the wedding of Prince Konstantin and Princess Deniz of Bavaria (whose wedding look closely mirrored Meghan Markle's), these Swedish royals truly looked like an IRL fairytale. We're getting major Cinderella vibes from Princess Sofia's baby blue gown, and her better half has the whole Prince Charming thing down in a black tux.
Kicking off Prince Harry and Meghan Markle's royal wedding on May 19, 2018, Amal Clooney arrived on the scene dressed like a (chic) literal ray of sunshine while sporting a vibrant Stella McCartney creation. Naturally, her husband George looked dapper, as well.
Also styled in custom Stella McCartney, Oprah Winfrey turned heads at Harry and Meghan's wedding in a light pink number—that came together literally hours before the wedding. After deciding that her original beige dress appeared too close to white, the designer's team stayed up all night to recreate her gown in a more wedding-friendly hue.
What would an Elton John ensemble be without a pair of quirky shades!? The "Piano Man" singer performed at the Duke and Duchess of Sussex's lunchtime wedding reception.
David and Victoria Beckham
This isn't the only time you'll see this power couple make the list. Victoria donned one of her own creations to watch Harry and Meghan say "I do," which she paired with bright pumps. David, on the other hand, rocked a gray Dior Homme custom-made morning suit.
Princess Caroline of Hanover
The daughter of actress Grace Kelly and Prince Rainier III of Monaco, Princess Caroline almost outshone the bride at her son, Pierre Casiraghi's, wedding to Beatrice Borromeo in 2015. Contrasting colors and shimmery details make Caroline's look a completely enviable mother-of-the-groom gown.
Diane von Furstenberg
This Belgium-American fashion designer also sported a wow-worthy dress to Pierre Casiraghi's Italian nuptials. Perfect for the August ceremony, she bore a floral yellow ensemble, while putting her best foot forward in a pair of gold kicks.
Prior to their own nuptials, Beatrice Borromeo and Pierre Casiraghi attended Prince Felix Of Luxembourg and Claire Lademacher's wedding in 2013. Borromeo looked pretty in pink with a light, tailored pantsuit. And, can we talk about that one-of-a-kind headpiece!? Upcoming royal wedding guests, take note.
David and Victoria Beckham (...Again)
Posh Spice took her moniker to heart, wearing ever the fashion-forward look for Prince William and Kate Middleton's wedding in 2011. Sky-high heels topped off the former Spice Girl's all-navy look, which included a high-low dress with a royal wedding-appropriate hemline.
Princesses Eugenie and Beatrice
Princess Eugenie and her sister, Princess Beatrice, both sported extravagant fascinators that matched their apparel to attend their cousin, Prince William's, nuptials. Eugenie stuck with a blue, green, and purple color palette, while Beatrice sported a light pink coat to complement her far-from-modest headpiece.
This London TV personality and socialite, who unfortunately passed away in 2014, put the "royal" in royal blue, opting for a monochromatic dress, gloves, heels, and geometric fascinator at Will and Kate's wedding.
Even nine years after Will and Kate's nuptials, Pippa Middleton's bridesmaid dress is still a hot topic of conversation. The sister of the bride, who served as maid of honor, sported a fitted Sarah Burton for Alexander McQueen number that almost rivaled Kate's iconic long-sleeve gown.
Queen Elizabeth II
The royal matriarch, who's notorious for her colorful wardrobe, opted for a cheerful, all-yellow outfit. The Queen was all smiles at her grandson, Prince William's wedding, in a coat dress and matching hat. She also wore a brooch from her collection, the True Lover's Knot design.
Princess Clotilde Courau
Meanwhile, in Monaco, Prince Albert II and Charlene Wittstock also tied the knot in a 2011 royal wedding. Guest Princess Clotilde Courau, married to Prince Emanuele Filiberto of Savoy, stunned in a head-turning, ruffled red dress and black accessories.
Fashion hotshot Karl Lagerfeld also attended Prince Albert II and Princess Charlene's 2011 nuptials, unsurprisingly taking the royal wedding dress code to trendy new heights. The creative director behind Chanel opted for studded gloves and a brooch to personalize his formal guest attire.
Giorgio and Roberta Armani
Another fashion powerhouse, Giorgio Armani, went to the Monaco royal wedding with his niece, Roberta. The designer looked dapper with a silver tie and vest, while Roberta stole the show in an ultra modern brown dress.
This supermodel made an entrance at Prince Albert II's ceremony with a navy peplum look, featuring a fitted skirt and an embellished black train.
Just a few months after her own wedding, Kate and Prince William attended the wedding of Mike and Zara Tindall, the Queen's eldest granddaughter. To commemorate one of her first royal outings, the Duchess looked the dignified part in a cream and yellow patterned coat with a chic fascinator.
At the same wedding, British actress Katherine Kelly rocked a colorful, wide-brimmed hat and a more demure cream, one-shoulder gown.
Princess Marie-Chantal Miller
If this royal bride's wedding dress has taught us anything, it's that this princess knows a thing or two about impeccable style. For Prince Nikolaos and Tatiana Blatnik's 2010 nuptials, Princess Marie-Chantal turned to a floor-length, trumpet-style pink gown. An embroidered shawl with floral appliqués topped off the Greece wedding look.
Queen Rania of Jordan
Channeling the ultimate Carolina Herrera vibes, Queen Rania wowed in a white blouse tucked into a lavender skirt as a guest at Crown Prince Felipe Of Spain and Letizia Ortiz Rocasolano's 2004 wedding.
The People's Princess was known for her iconic sense of style, which is apparent here in 1988, when she attended the wedding of Julia Rawlinson and James Ogilvy, son of Princess Alexandra of Kent. Diana's look reads classic and effortless, as she sports a white dress and hat, gray coat, and pearl accessories.
The Queen Mother
The Queen Mother donned a light blue look, complete with a fluffy headpiece (it was the '80s, after all) to the wedding of Princess Diana and Prince Charles.
Frances Shand Kydd
Princess Diana's mother, seen here with Prince Philip on her daughter's wedding day, also channeled blue hues at the 1981 royal wedding. The mother-of-the-bride accessorized with a tasteful hat and pearl necklace.
Former first lady Nancy Reagan opted for a timeless ensemble to Prince Charles and Princess Diana's ceremony. She sported a simple dress and hat, paired with gloves, a cardigan, neck scarf, and subtle accessories.