Without specifying the date, it is difficult to provide a comprehensive answer. However, based on the search results, here are some outfits that Queen Letizia of Spain has worn:

• Sandro green paisley-print pleated midi scarf dress
• Carolina Herrera Victoria Insignia Satchel Bag in Black
• Hugo Boss Faleena Striped Sweater in Midnight Fantasy
• Hugo Boss Safashy1 Trousers in Navy
• Unidentified navy leather belt with covered buckle
• Isabel Abdó Carrie Slingback Pumps in Blue Suede
• Hugo Boss Jaflera Denim Blazer
• MU 01 Sneakers
• Gold & Roses Shewel Triple Hoops
• Pink tweed jacket by Spanish brand Mirto
• Midi floral dress from Cayro
• Boss macramé and fringe midi black dress
• Cho Atelier lilac dress
• Olivia Mareque lilac bag
• Carolina Herrera red pantsuit
• Confetti print Massimo Dutti dress
• Temperley London patterned dress
• Polka dot midi dress
• Carolina Herrera pussy-bow silk blouse
• Camel Carolina Herrera wool coat
• Is Coming sweater and brocade pencil skirt outfit
• Adolfo Dominguez linen pantsuit

Note that this is not an exhaustive list, and there may be other outfits that Queen Letizia has worn that are not included in the search results.