After a long career in the film industry, Le opened up The China Beach Bistro, a Vietnamese restaurant in Venice, Los Angeles in 2002. After 10 years at that location, Hiep closed China Beach and opened Le Cellier, a French-Vietnamese fusion restaurant on the Venice and Marina del Rey border in 2012. "Although it's not easy to find out here, French-Vietnamese food dates back to the 18th century ... This unique cuisine combines the fresh herbs of Vietnamese food with the fine heritage of country French cooking", Le said. As of 2016, she owned the restaurant Le Cellier with Mark Van Gessel and Bernard Louberssac.