The model did, however, wear a headpiece and cuffs designed by local designer Natalie Chan.
A director for the New Zealand section of the competition told AAP: "I was very upset about the fact that it was not a national costume. It was just a black dress with bling bling on it. Thank God we had a headpiece by Natalie Chan."
Van Dyke has previously said that she found it difficult to find enough clothes to take with her to the pageant.
