The Star Dancers (omnibus edition of Stardance and Starseed)

Shara Drummond was a gifted dancer and a brilliant choreographer, but stood over six feet tall and had the body of Venus di Milo. On Earth she could not pursue her dream of dancing, so she left the Earth, and in the weightlessness of space created an art form that is to Dance as three dimensions are to two. Then the aliens arrived.... There was only one way to prove that the human race deserved not just to survive, but to reach the stars. Shara did it, with her Stardance.Years later, another dancer of genius faced the end of her career when her body failed her, and Rain McLeod followed Shara into space. Her only hope was the Starseed Foundation. If she joined with a symbiotic lifeform that would let her live without artificial protection in the vacuum of space, she would take a quantum leap in human evolution. She would become a Stardancer....