The night before official proceedings began for Willem-Alexander and his wife Maxima, Lalla Salma, 35, stepped out with her fellow royals at Amsterdam's famous Rijksmuseum for the state dinner in a cream Moroccan caftan.
Lalla Salma's jewel encrusted caftan, glittering tiara and earrings earned her 38% of the vote, closely followed by Denmark's Princess Mary with 37%
Flanked by her husband Prince Frederik, Mary stunned in a flesh-coloured creation adorned with thousands of crystals. The Tasmanian-born royal accessoried with a dark beige clutch and sparkling tiara offered a polished finish.
Spain's Princess Letizia won third position. Letizia chose a sleek black gown for the occasion, complete with a sheer lace collar and sleeves and black floral detailing.
The following day Princess Lalla Salma looked as as the Netherlands welcomed its first king for more than 120 years. Lalla Salma's outfit was another hit with HELLO! Online readers and she scooped 45% of the vote, 22% more than Queen Maxima who came in at second place.
Mother-of-two Lalla Salma turned heads in a heavily embellished green caftan and towering gold heels. Floral detailing on the front of the caftan matched the Moroccan princess' flame red curls, which she wore in a ponytail.
The ever stylish Princess Mary followed Lalla Salma and Queen Maxima with a 12% of HELLO! Online readers voting her the best dressed. Mary wore a white dress, injected with a splash of colour in the form of a floral panel around her waist and a powder-blue sash.