The silicone enhanced breasts, calf implants and steroid pumped muscles of today become the bio-enhanced razor girls and muscle boys in the gritty future of William Gibson's Neuromancer . In this era, a driven, brilliant college drop out named Johnny Stevens takes medical virus technology and offers people the chance to transform their bodies. Skin color can be changed, height can be alterned, people can become the image of Marilyn Monroe or Elvis.
Human form becomes mutable, the clay for all forms of vanity, self expression and kink.
All it takes is the right design, delivered by an engineered virus that will transform all the cells in the body. Bright people, especially in computer science, tend to have a division between the brain and the body. They tend to live in their heads, the body is just there to support the mind. A lot of science fiction follows this divide. The body many be drastically modified, but the mind remains.