Lenoir was first spotted by Ford Models when she was 16 years old. In 2001, Lenoir signed with L'Oréal, and has since appeared in their advertisements alongside Laetitia Casta and long-term model and actress Andie MacDowell. She has also worked for Victoria's Secret, Gap, Next, and many others. Lenoir is currently the face of UK high-street retailer Marks & Spencer, and can be seen in various British magazines and billboards alongside fellow models Twiggy and Laura Bailey.
