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French Environment Minister Segolene Royal (C,R) and Spain's Queen Letizia (C,L) pose during the Second Global Conference on Health and ClimateBERTRAND GUAY/AFP/Getty Images

Queen Letizia of Spain may have conducted her royal duties in Paris today (7 July) without her husband, King Felipe VI, but she still radiated confidence at the WHO Second Global Conference in a French-inspired chic ensemble.

The 43-year-old Spanish monarch looked her usual elegant self in a monochrome outfit comprising of a navy ruched top by French fashion house Nina Ricci and a white pencil skirt, tied together with some navy open toe heels.

Letizia, who is the mother of two daughters – Leonor, Princess of Asturias and Infanta Sofía of Spain – appeared to take inspiration from our Duchess of Cambridge's favoured hairstyle of late, a low, relaxed updo. She completed the stylish look with gemstone drop earrings and vibrant make-up consisting of peach blusher and lip gloss.

The former journalist met with the French Environment Minister Segolene Royal and World Health Organisation Public Health Director, Maria Nera, for her solo engagement at the Second Global Conference on Health and Climate.

Letizia delivered a compassionate and eloquent speech regarding global responses to climate change, since the world now has a global climate agreement that will have a major impact on public health policy as countries take action.

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Spain's Queen Letizia attends the Second Global Conference on Health and ClimateDOMINIQUE FAGET/AFP/Getty Images

Central to the actions conducted is the "right to health," as stated in the agreement, which also aims to limit greenhouse gas emissions to keep global warming below 2°C and commits countries to strengthen adaptation.

queen letizia
Spain's Queen Letizia delivers a speech during the Second Global Conference on Health and ClimateDOMINIQUE FAGET/AFP/Getty Images

Letizia later posed for photographs with French Environment Prime Minister Segolene Royal – dressed in a bright orange dress and black and white print jacket – after sitting next to her during the conference.

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French Environment Minister Segolene Royal (L) and Spain's Queen LetiziaBERTRAND GUAY/AFP/Getty Images

The WHO conference was the first event in a while that Letizia has attended alone, and was spotted with her husband, Felipe, King of Spain, at an Iberdola scholarships ceremony in Madrid on 5 July.

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(From L) French Environment Minister Segolene Royal, WHO Public Health Director, Maria Nera, Queen Letizia and Andre ValliniDOMINIQUE FAGET/AFP/Getty Images

The couple – who married at a Madrid cathedral in an idyllic ceremony in 2004 – looked more in love than ever as they exchanged private jokes and giggled during the ceremony. Letizia channelled summer sophistication in a pretty floral dress from none other than Zara for the occasion, which cost just £49.99 before it sold out.

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Catherine, Duchess of Cambridge, sporting her favourite low updo of latePhil Noble