The monarch chose the outfit to attend the Red Cross Foundation fundraising event at L’Oceanogràfic earlier this year.
Royal fans shared their thought on social media with one saying: “While we wait for Catherine’s next appearance I would like to take a minute and bow to Queen Letizia’s abs. She is on fire!”
Few colours inspire more royal devotion than pink and royal women have worn the hue for decades.
Author Jules Standish, head of colour at the London College of Style, explained wearing pink shows “compassion and kindness”.