The 21st Century Leaders was founded in 2003 by Trade plus Aid, a British charity. 21st Century Leaders mission is to assist and encourage royalty, Nobel Peace Prize laureates, and celebrities from the fields of film, music, fashion, art, sport and literature etc. to raise awareness and funds for environmental and sustainable human development solutions.
Robbie contributed with several drawings; his symbol of hope for the 21st century (a perfect circle), his autograph, his message of hope (all you need is love) and a drawing of himself as a stick person.