For the evening outing, the royal couple's younger daughter chose a striking blue-and-white off-the-shoulder dress featuring an abstract cobalt print, a defined waist, and a flowing overlay. This creation is from Spanish brand Desigual in collaboration with designer Stella Jean.

However, observant fashion critics and fans instantly recognized the outfit. It turned out the dress has already become a true "family heirloom."

Queen Letizia was first spotted in the dress during a traditional reception in August 2023. A year later, Sofía’s older sister, Crown Princess Leonor, wore the piece. Now it was Infanta Sofía's turn, as she demonstrated flawless taste while carrying on the royal family's tradition of mindful consumption.