The most fascinating personalities are those who have changed because of their circumstances. And this can be made out by comparing their left (passive) and right (active) hands, assuming that they write with their right hands. In the case of the music star and British-Sri Lankan rapper, Matangi M.I.A. (also known as Maya)*, it is so. Generally speaking, this would indicate an unusual (and at times tumultuous) life, emotionally speaking at least. Considering she was a Tamil refugee from Sri Lanka to the UK, it isn't surprising that she led an eventful life which impacted her character. The active hand (the writing hand) reveals the current self, while the passive shows the subconscious or the inherited personality.
Mathangi has longish fingers and a longish palm, and this shape points to a sensitive, vulnerable, and intuitive person, a person for whom feelings are important. Her heartline is strong, on both hands, and this fits in