The Elephant Crisis Fund has launched a global campaign to combat the illegal ivory trade, #KnotOnMyPlanet, supported by top models and stars including Doutzen Kroes, Naomi Campbell, Joan Smalls, Miranda Kerr, Cara Delevingne, Adriana Lima, Robin Wright, Pearl Jam, and Adrien Brody.

Stars have shared images tying a knot, and Kroes commented 'The #KnotOnMyPlanet campaign is unlike any other that I have been a part of, it has passion and purpose. As a mother, I don't want my children to live in a world without elephants and as a model, I knew that we could rally the fashion community to save the elephants at time when they need it the most'.