in 1999, headhunted by françois pinault, lévy founded and was the international director of the private sales department at christie's in new york. in 2003, she founded dominique lévy fine art, a boutique art advisory service with a focus on building long-term relationships with collectors. in august 2005, lévy co-founded l&m arts with robert mnuchin, which was based in new york and los angeles. the bi-coastal gallery provided client services and organized exhibitions of modern and postwar art, as well as new work by such artists as david hammons and paul mccarthy.