The 2025 Rose Ball didn’t disappoint. The Grimaldi family dazzled at the Salle des Étoiles in the Sporting Monte-Carlo, showcasing some of their most stunning appearances to date. Caroline of Monaco stayed true to her signature elegance in a white gown, accented with a vintage brooch. Charlotte Casiraghi went for classic black, while Alexandra of Hanover, Beatrice Borromeo, and Tatiana Santo Domingo brought a bold splash of color to the night.
Alexandra of Hanover’s pink gown
The youngest daughter of Caroline of Monaco—and Charlotte Casiraghi’s sister—has clearly inherited her mother’s love for fashion. Staying true to her family’s signature style, the 25-year-old royal chose a bubblegum pink, Disney princess-style gown for the evening.
Alexandra, who attended with her boyfriend, German-born Ben-Sylvester Strautmann, wore a V-neck dress with draped sleeves that fell softly over her arms, a corset-style bodice with fine pleating, and a flared skirt. From Giambattista Valli’s Spring-Summer 2025 Haute Couture collection (one of her favorite designers), the gown also featured delicate, hand-crafted floral embellishments at the hips—details that made it one of her most striking looks yet at the Rose Ball.
She completed the outfit with a showstopping necklace from Cartier’s Pluie collection: 492 brilliant-cut diamonds set in white gold, valued at around $383,000.
Beatrice Borromeo’s red cape dress
Pierre Casiraghi's wife, Beatrice Borromeo, also made color the focal point of her ensemble. She opted for a striking blood-red gown with a V-neckline, a pleated bodice flowing into an elegant cape, and a sheer floor-length skirt.
To trace the dress, you’d have to go back to January 20, 2020—it's from Dior’s Spring/Summer 2020 Haute Couture collection shown in Paris.
Metallic shine for Tatiana Santo Domingo
Tatiana Santo Domingo, wife of Andrea Casiraghi—Caroline of Monaco’s eldest son—joined the colorful Caribbean-themed night in a striking coral metallic dress with a hint of fuchsia.
The Colombian-American designer wore a piece by British label Erdem (€3,495), made from jacquard fabric with a linen blend and a carnation print. The dress had an asymmetric, draped silhouette and featured a bold, oversized bow on the left shoulder.