May 15, 2014 - 12:14 BST hellomagazine.com Queen Maxima of the Netherlands wowed in a scarlet gown and ruby and diamond encrusted tiara as she and King Willem-Alexander hosted the Annual Diplomatic Gala Dinner Queen Maxima and King Willem-Alexander of the Netherlands hosted the Annual Diplomatic Corps Gala Dinner on Wednesday night.CLICK ON PHOTOS TO ENLARGE Known for her bold and glamorous fashion choices, 42-year-old Maxima didn't disappoint as she stepped out in a striking scarlet dress with a full ruffled skirt and matching shawl. Royal style watchers were thrilled to see the mother-of-three complete her outfit with the Dutch royal family's glittering Mellerio Ruby Parure tiara, which she previously wore at a dinner held the night before Prince Guillaume and Princess Stephanie of Luxembourg's royal wedding in 2012. VIEW GALLERY Queen Maxima wowed in a scarlet gown and jewels Maxima teamed the tiara with a matching necklace, bracelet and earrings — all made up of diamonds and rubies — and also carried a neat silver clutch bag. Queen Maxima and King Willem-Alexander of the Netherlands celebrate their first King's Day The couple received their guests at the Royal Palace of Amsterdam where they enjoyed a banquet designed to help maintain and strengthen international relations. Queen Maxima and King Willem-Alexander hosted the evening at the Royal Palace of Amsterdam The gala was also attended by the Netherlands' former queen, Princess Beatrix, and her sister Princess Margriet. Queen Maxima will celebrate her 43rd birthday on Saturday 17 May and is expected to spend her special day privately with her husband and their three daughters Princess Catherina-Amalia, ten, Princess Alexia, eight, and Princess Ariane, seven.