Whitefish, MT -

Whitefish, Mont., skier Maggie Voisin -- who is the youngest Olympian representing the United States in the Winter Olympics -- is now the youngest athlete to ever compete in and medal at the Winter X Games, according to ESPN.

The 15-year-old Voisin had a top score of 90 and won a silver medal in the women's ski slopestyle on Sunday afternoon in Aspen, Colo.

Kaya Turski of Canada won gold with a score of 91.33.

Darian Stevens of Missoula, Mont., finished seventh in a field of eight competitors. The 17-year-old's top score over her three runs was 76.33.