I found some (sadly small and blurry) pictures from the gala banquet on 10 April 2000:
Prince Ali of Jordan escorting his sister Princess Alia bint al-Hussein:
Crown Prince Haakon of Norway with Princess Zein al-Hussein (daughter of Princess Muna and full sister of King Abdullah), wearing a tiara worn by her mother. Behind is Princess Ghida al-Talal, wife of Prince Talal (a cousin and advisor to the King):