The slender and busty Zing & the huge and muscular Zang share the same body. They can freely change from male to female and back again at will. A secret kept by the other members of the circus. Both Zing & Zang are fully aware of each other and try to make the most out of their male and female forms.
I thought a split portrait of them both would act as an interesting way of showing their two personalities/one body.