She is best known for her campaigns with brands like Prada, and Calvin Klein. She has worked with such designers as Louis Vuitton, Ralph Lauren, and Chanel. She has also walked the ramp for brands like Balenciaga, Dries van Noten, Givenchy, Isabel Marant, Barbara Bui, Celine, Chanel, Chloé, Kenzo, Louis Vuitton, Miu Miu, Nina Ricci, Prada, Rue du Mail, and Undercover. Born Alison F. Stephens on May 10, 1991 in Salt Lake City, Utah, USA, she has five siblings including her older sister, Madison. Ali was discovered in Salt Lake City while shopping with her family and signed a three-year contract with Elite Model Management in August 2007. She made her runway debut at the Prada spring/summer fashion show in Milan in September 2007. She has been married to Nicholas Lund since August 2012.