ice queen

noun2

1. •
   A beautiful but heartless woman.

   • Miss O'Neil's duplicitous power-mad ice queen epitomizes cruel hauteur with a streak of lethal saccharine—she is a nightmare stepmother. — 1986
2. •
   (informal) A female ice-skating champion.

   • This time, she was beaten by 16-year-old Tanja Szewczenko, who is threatening to usurp the two-time Olympic champion, Katarina Witt, as Germany's ice queen. — 1993