15th anniversary

Charlotte Casiraghi, Beatrice Borromeo, and the best-dressed guests at Charlene of Monaco's wedding, 15 years later


The religious ceremony, once called "Monaco's biggest party in 55 years," marks its anniversary this year.


Princess Charlotte Casiraghi© AFP via Getty Images
Maria LoretoSenior Writer
JULY 2, 2026 6:20 PM EDT

Monaco threw two days of celebrations at the Grimaldi Palace to mark the royal wedding of Prince Albert II and Charlene Wittstock, an event so lavish it earned the nickname "Monaco's biggest party in 55 years." On the second day, July 2, 2011, the couple held their religious ceremony at 5 p.m., a full 24 hours after their civil wedding, followed by a formal dinner. 

Between the two events, guests like Charlotte Casiraghi, Beatrice Borromeo, and Princess Caroline turned heads with polished cocktail looks for the afternoon and elegant gowns for the evening. So what did they wear? We're breaking down each look in this photo gallery.

1/8 — Princess Caroline of Monaco and Alexandra of Hanover

Princess Caroline of Hanover and Princess Alexandra of Hanover© Getty Images
Princess Caroline of Hanover and Princess Alexandra of Hanover

For the religious ceremony, Albert's older sister chose an eye-catching pink dress with crystal-trimmed bands under the bust and at the waist, a nod to '20s style, paired with a matching jacket. The whole look was Chanel. Her youngest daughter, Alexandra of Hanover, wore a mini dress with an embroidered neckline and ballet flats finished with a small bow at the toe.

2/8 — Princess Caroline of Monaco

Princess Caroline of Hanover and Princess Stephanie of Monaco at the civil ceremony of the Royal Wedding of Prince Albert II of Monaco to Charlene© Getty Images
Princess Caroline of Hanover and Princess Stephanie of Monaco at the civil ceremony of the Royal Wedding of Prince Albert II of Monaco to Charlene

That evening, Princess Caroline switched to a midnight-blue lace midi dress, styled with jeweled sandals, a gold clutch with a fringe tassel, and a tiara to top it off.

3/8 — Charlotte Casiraghi

Princess Charlotte Casiraghi© AFP via Getty Images
Princess Charlotte Casiraghi

Princess Caroline's eldest daughter made a statement in a pastel pink cocktail dress with a boat neckline and horizontal pleating, from Chanel's Spring/Summer 2011 Haute Couture collection. She finished the look with crisscross-strap sandals and a woven headband.

4/8 — Pierre, Charlotte, and Andrea Casiraghi

 Pierre Casiraghi, Charlotte Casiraghi and Prince Andrea Casiraghi having dinner at Opera terraces after the religious wedding of Prince Albert II of Monaco and Princess Charlene © Getty Images
Pierre Casiraghi, Charlotte Casiraghi and Prince Andrea Casiraghi having dinner at Opera terraces after the religious wedding of Prince Albert II of Monaco and Princess Charlene

For the evening event, Charlotte Casiraghi stood out in a sky-blue gown by Giambattista Valli, with a jeweled waistline and a matching cape.

5/8 — Andrea Casiraghi and Tatiana Santo Domingo

Tatiana Santo Domingo and Andrea Casiraghi© Getty Images
Tatiana Santo Domingo and Andrea Casiraghi

For the religious ceremony, Tatiana Santo Domingo wore a short, cross-front dress cinched at the waist with a tie. Its bold violet color popped against her light-toned accessories, and her bamboo clutch added an unexpected touch.

6/8 — Tatiana Santo Domingo and Beatrice Borromeo

Countess Beatrice Berromeo with Alex Dellal and Tatiana Santo Domingo © AFP via Getty Images
Countess Beatrice Berromeo with Alex Dellal and Tatiana Santo Domingo

For the gala dinner, Santo Domingo switched into a flowy nude-toned design with a boat neckline, built from delicate layers of chiffon.

In the case of Borromeo, her daytime look leaned toward soft, muted tones; for the evening look, she went all out in a metallic boat-neck gown with structured shoulders, long sleeves, and a sequin-covered train.

7/8 — Pierre Casiraghi and Beatrice Borromeo

Pierre Casiraghi and Beatrice Borromeo © Getty Images
Pierre Casiraghi and Beatrice Borromeo

Pierre Casiraghi's then-girlfriend wore a fitted, pale grey lace dress, paired with fishnet tights, a small side-tilted hat, and heels with an ankle strap, an unexpected combination that stood out from the crowd.

8/8  — Princess Máxima of the Netherlands

The Netherland's Crown Prince Willem-Alexander and The Netherland's Princess Maxima© AFP via Getty Images
The Netherland's Crown Prince Willem-Alexander and The Netherland's Princess Maxima

The then-princess turned to one of her go-to designers, Jan Taminiau, for a straight-cut yellow dress with draped detailing and an oversized flower at the shoulder. She rounded out the look with camel accessories and a raffia hat.