Alexandra Saint Mleux Debuts First Wedding Gown in Monaco, Second Celebration Planned

Alexandra Saint Mleux and Formula 1 driver Charles Leclerc quietly marked their civil wedding in Monaco on Feb. 28, then shared polished images on Instagram the following day that captured a close-up of a band being slipped onto her finger and a drive away in a rare 1957 red Ferrari 250 Testa Rossa. Charles captioned the posts “a day we’ll forever remember” and added, “Part 2 will be next year with all of our close ones,” while Alexandra wrote, “Dream. Can’t wait to marry you all over again next year,” with People recording a variant as “Dream 🪽Can’t wait to marry you all over again next year x.”

The couple’s carousel of portraits leaned into Monaco’s Mediterranean backdrop: balcony kisses above blue water, postcard-perfect street shots, and “impossibly polished portraits” that framed the day as intimate and on-brand. Photos credited to Mark Sutton – Formula 1/Formula 1 via Getty show a dachshund named Leo popping up throughout the sequence, lounging on the train, snoozing on the bride’s lap, and even posing in the Ferrari, a scene-stealing detail that underscored the domestic warmth of the ceremony.

The bride wore a custom Paolo Sebastian gown described across coverage as off-the-shoulder with long sleeves, a fitted bodice and a fishtail silhouette that flowed into a sweeping train. Marie Claire’s close read of the look lists French Chantilly lace shot through with butterfly embroidery, a glittering shimmer to the lace, and a row of 1950s-style buttons running the length of her back. Alexandra finished the look with Graff jewelry, a sleek bun, and a bouquet of white blooms, the train staged in multiple images to dramatic photographic effect.

This wedding is the next chapter in a relationship first spotted in March 2023; Leclerc confirmed their partnership two months later in an interview with Gala France. The engagement was announced on Nov. 2, 2025, and Leclerc confirmed that news publicly at a press conference ahead of the 2025 Brazilian Grand Prix when he said, “I’m very happy to announce that Alex and I are officially engaged.” Elle noted that Saint Mleux had become a fixture at race weekends and that she made her F1 debut at the Monaco Grand Prix, turning heads with a bohemian two-piece and a heart-shaped clutch.

Style watchers will also recall Alexandra’s pre-wedding Instagram looks: at the engagement she favored a baby-blue take on the lace-trimmed slip dress trend, and in mid-February she posted a white Ance Gria skirt set, the Clover Top in Ivory (about $200) paired with the Clover Skirt in Ivory (about $240), a lightweight ensemble that anticipated the weightless movement of her wedding train. Raw feed captions included a typographical oddity reading “Alexander Leclerc wearing a white skirt set in mid-February 2026,” preserved in shopping fragments.

With Charles promising a larger celebration next year “with all of our close ones” and Alexandra updating her Instagram name in different reports to “Alexandra Leclerc” and “Alexandra Leclerc 🦋,” expect a second, more public chapter in which another bridal look is likely to make headlines. For now, the civil ceremony in Monaco, the Paolo Sebastian gown, the Graff jewels, the 1957 Ferrari, and dachshund Leo, closes one intimate circle and sets a sartorially high bar for Part 2.