Reminiscent of beautiful Jordanian Queen Rania, the mum-of-two and her husband Felipe visited the Sheikh Zayed mosque – the eighth largest in the world – during their first visit to the United Arab Emirates capital.
Letizia, widely considered to be one of the most fashionable royals, was on elegant form in a chic white trouser suit and blue shirt.
With respect for tradition, she covered her head in a white shawl, and, like her husband, removed her shoes before entering the place of worship.
The princess and Felipe arrived in the Emirates on January 16, primarily to attend a world energy summit and to help promote Spanish culture in the region.
Keen to acquaint themselves with some of Abu Dhabi's breathtaking sights, the couple visited the ornate religious structure – named after the founder and the first president of the United Arab Emirates - shortly after arriving in the city.
Their foreign visit, from which the couple have since returned, followed the revelation that Spain's royal family were named as benefactors in the will of a multi-millionaire they had never met.
An investor and business tycoon from Menorca reportedly left half his fortune to the prince and princess, their two girls Leonor, four, and Sofia, two, and their six cousins.
The remainder has been designated to Prince Felipe to establish a charitable foundation.