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.