During the photoshoot of the Dutch Royals there was a short interview with the Princess of Orange about her first formal event. Apparently there had been quite a few talks about the dress she'd wear but choosing the tiara was easy. Her mother presented her with several options and she immediately opted for her mother's wedding tiara.
The princess herself once more stated to be fond of tiara's so that is good news for the future. Considering the colours of her dress and the order of the Dutch Lion im assuming the options were mainly diamond or pearl ones.
The base of the star tiara got another outing when her grandmother Beatrix used it in the pearl button version for the diplomatic dinner. Im looking forward to seeing her in the aquamarines and emeralds.