Why did Heisenberger decide to write this book on the
power of clothes? 'Well, actually, one day I was watching
an episode of The Simpsons: at school, Bart was wearing a
'Down with homework' T-shirt and this provoked a student
riot; so everyone had to wear the same grey uniforms. The
grey dress-code made the students calm down and behave
well. But when it started to rain and the rain washed their
clothing into colour, they behaved badly again. After this
hilarious episode, I thought I must write a book about this
- the connection between the clothes we wear and the way
we behave.'