King Felipe VI and Queen Letizia were joined by the President of Argentina and First Lady, who are in Spain on a State visit, for the official opening of the 36th ARCO International Contemporary Art Fair in Madrid.
The event attracts collectors, curators, museum directors, gallery owners, artists and professionals from all around the world, which makes the show a unique and unmissable event on the international art calendar. Argentina is the guest country of this year's Fair.
The party of four enjoyed mingling with the crowds.
The Spanish queen opted for a minimalist yet youthful look. She debuted a white fit-and-flare dress by her go-to brand Hugo Boss.
She wore the 'Kajuni' dress (£259.99) from the label's HUGO line. The solid white frock is made from a stretchy cotton blend. It features half-length sleeves, a waisted cut and a slightly flared skirt with subtly draping folds. The round neckline with a small band collar adds an unconventional touch.
Letizia offset the solid white dress with snakeskin accessories. She carried her Lidia Faro python skin clutch bag and on her feet she wore the Magrit 'Mila' snake-effect pumps.
Queen Letizia continued her recent trend of borrowing jewels from the royal vault.
She premiered a sparkling pair of pearl drop earrings worn by her sister-in-law Infanta Elena on her wedding day.
It has been somewhat of a tradition for Letizia to debut a new outfit for this annual art exhibition. Here's a look back at her previous ARCO ensembles: