by Part-Timer » May 13th, '12, 13:53
The "how" is obvious, isn't it (in simple terms)? What makes quick change acts special is in the quality of the outifts (both in terms of how they look and in concealing the obvious "how"), the routining and the speed at which the changes are made.
I remember borrowing a library book when I was a child that told you how to do a particular quick change or two (it was a kids' book too), but for a proper act, you really need either help from someone who has experience in the field or get a specialist book (and pay for it). Try Lee Alex's book (also available as a DVD) Time for a Change.