Queen Letizia of Spain, 45, was accompanied by her husband King Felipe VI and mother-in-law Emeritus Queen Sofia as she chaired the reception on Friday.
The event took places at Almudaina Palace in Mallorca, Spain, and the former journalist stood out in a sleeveless, bright orange top.
Her sculpted arms were on show, but the top’s polo neck helped keep her look sophisticated.
The orange vest was perfectly complemented by a navy A-line skirt covered in a floral print.
Like always, Letizia teamed the look with a pair of sky-high black, heeled sandals, and she scraped her hair off her face into a low sitting ponytail to complete her formal look.
Felipe wore a matching navy suit while Queen Sofia looked elegant in a mint-coloured tunic with an oriental design and a pair of loose-fitting white trousers.
Yesterday, Letizia and her family enjoyed a concert in Mallorca.
King Felipe, Princess Sofia, Queen Sofia, Princess Leonor and Princess Irene of Greece were all in attendance.
She tucked this in to her high waisted washed silk black peg-leg trousers, which were belted at the waist.
On her feet, Letizia wore a pair of chunky black Mala sandals from Spanish brand Naguisa. They are currently on sale for £173.
Letizia accessoried with non-precious jewellery, wearing a pair of large hoop earrings.
These were Roma earrings from Coolook, and cost £159.
A slim black glitter clutch bag completed the look for the mum-of-two.
Her golden glowing tan was the only other accessory the royal needed, and she didn’t wear a bracelet or necklace, leaving her décolletage bare.
She accentuated the tan with her makeup, opting for bronzer and a shimmering brown eyeshadow.
A raspberry pink lipstick was the final addition. Letizia wore her hair in a relaxed style straight down over her shoulders.
Letizia has been enjoying an extended break in Mallorca with her family.
On Wednesday, the stunning former-journalist was with her two daughters and mother-in-law on a day trip. They visited Olivar market as part of their summer holidays.
She accessorised with gold sandals on her feet and married a straw bag.
Mickleach.com is your news, entertainment, music & fashion website. We provide you with the latest news and videos straight from the entertainment industry.