Born on January 12, 1987 in North Bay, Ontario, Muise was discovered at the age of 14 in a Barrie mall by Michèle Miller, owner of the International Model Management agency, who also discovered Jessica Stam. Muise packed up and moved to New York City at the age of 17.
In 2005, she appeared in the Victoria's Secret 10th annual fashion show, also walking the runway for them in 2006 and 2007. She has walked for shows that include Abaete, Lacoste, Lela Rose, Yigal Azrouel,Nanette Lepore, Julien Macdonald, Oscar de la Renta, Trovata, and Dolce & Gabbana. She appeared on Project Runway, walking for designer Santino Rice in the season finale.
After her career as a model, she would like to become a shoe and jewelry designer.