It is a question that must trouble many a dignitary preparing to welcome members of the Royal family on an overseas tour -- what do you get the person who has everything?
The answer, it would seem, is a hat, according to a list of gifts the Duke and Duchess of Cambridge were given on their first official overseas trip together in 2011.
Hats off to you: According to the official list of presents, Prince William and Kate received no fewer than 20 different types of headgear ranging from baseball caps to elegants ones and cowboy hats. File pic/afp
Hee-haw! The royal couple were presented with all manner of weird and wonderful mementos, but they received no fewer than 20 different types of headgear � from trendy baseball caps for the Duke to elegant fascinators for the Duchess.
The pair, who are both keen horse riders, were also in receipt of a number of traditional cowboy hats during their travels.
Between them they received more than 200 gifts, including a wide range of traditional clothing, jewellery, books, photographs and ornaments.
Among the more quirky items were a pair of snow goggles fashioned from Caribou antlers, a hand-carved wooden salmon lure, a mosquito trap, a papier mache model of a cassowary bird and a jar of Vegemite.
But hats featured very highly on the gift list, with the Duke twice receiving a collection of baseball caps during his time in New Zealand.
When he travelled to Australia, he also received headgear, this time in the shape of a traditional Akubra hat. The theme continued when the Duke and Duchess travelled to North America in the summer.
As a search and rescue helicopter pilot with the RAF it was perhaps appropriate that the Duke was presented with a flying helmet by 12 Wing Shearwater, Royal Canadian Air Force.
But he was also given another three baseball caps to add to his growing collection. The Duchess also received a range of headgear on her travels, including a blue hat from a Canadian minister and two fascinators, one made of tartan and the other of peacock feathers.
The couple also received cowboy hats from their Canadian hosts, which came in handy when they attended the Calgary Stampede rodeo.
The full list of gifts was published by Clarence House yesterday.
Among some of the interesting items they received were a set of Zulu spears and shields and a lute.
The Prince of Wales also received a trilby hat and a copy of the Koran.
Kate's wedding gown nominated for Awards The Duchess of Cambridge's wedding gown is a contender for the Design Museum's Design of the Year Award alongside the Boeing 787 Dreamliner and the Olympic torch. The Sarah Burton-designed gown is nominated in the fashion category.