One of Vaucher's most famous climbs was the Matterhorn in July 1965. When she reached the summit on July 14, she became the first woman to have climbed the Matterhorn's north face. She made the ascent with her husband on the 100th anniversary of the first successful ascent of the mountain, and their surprise climb was noted to have stole[n] the spotlight from two other climbing teams who were planning to climb the Matterhorn at the same time with film crews to broadcast their ascent on live television. An article in the St. Petersburg Times about the Vauchers' success was titled Swiss Housewife Steals Matterhorn Show, and when interviewed about her plans after the descent, Yvette answered, to go have a hair-do - fast.