The Argentinian-born royal, 53, was spotted in a beautiful strapless Valentino gown which featured a tiered lace-adorned skirt with chiffon ruffle adornments and a figure-skimming cut.
Queen Máxima re-wore her Valentino gown on Wednesday
The icy blue number was first worn by the stylish royal in 2011 when she was photographed alongside Prince Alois of Liechtenstein at a dinner following the religious wedding ceremony of Prince Albert and Princess Charlene of Monaco.
Also in attendance was Princess Catharina-Amalia, who will one day be Queen of the Netherlands. The 20-year-old wore a navy blue slinky mermaid dress from Alex Perry with a twisted front and square neckline.
Recommended videoYou may also likeWATCH: 5 Times Royals Recycled Their Outfits
Queen Letizia, the Duchess of Edinburgh, and Queen Maxima led the royal style set in December 2025 – see all the best royal fashion photos of the festive season
Queen Maxima of the Netherlands opted for a bridal white look for a visit to the Princess Maxima Center for Pediatric Oncology in Utrecht on Thursday, 18 December