Danny Kaye was the first to hold the goodwill ambassador position, with the title of Ambassador-at-Large granted in 1954.
Other celebrities have followed, acting as international, regional or national goodwill ambassadors, depending on their profile, interests, and desired level of responsibility.
This may take the form of public appearances and talks, visits to troubled regions, which draw attention from the media, and use of their political access to advocate UNICEF causes.
Celebrities attract attention, so they are in a position to focus the world's eyes on the needs of children, both in their own countries and by visiting field projects and emergency programmes abroad.
They can use their talents and fame to fundraise and advocate for children and support UNICEF's mission to ensure every child's right to health, education, equality and protection.