The crossword solution for the term 'Sun Valley Serenade Skater' is 'Henie, ' referring to Norwegian figure skater Sonja Henie. Henie was a three-time Olympic Champion in Ladies' Singles, a ten-time World Champion, and a six-time European Champion. She was also a film star, appearing in a number of Hollywood films from the 1930s to the 1950s. Henie is credited with popularizing figure skating and making it into a popular spectator sport.