German alpine skiing icon Rosi Mittermaier, a two-time Olympic champion, has died at the age of 72, her family said on Thursday. The family said Mittermeier “died peacefully in her sleep surrounded by her family after a severe illness.” Mittermeier gained fame in 1976 when she won downhill and slalom gold, plus giant slalom silver, at the Winter Olympics in Innsbruck, Austria. She also won the overall World Cup title that year and retired from the sport at the end of that season at the young age of 25. Known as Gold-Rosi, the immensely popular and cheerful Mittermeier was West Germany’s Sports…