Rachel Zoe opened up about why she left behind the career that made her famous. The former celebrity stylist, 54, said a lot of factors went into her decision but one of the main reasons was that she just "couldn't trust assistants." "I think after being completely betrayed, for lack of a better term, in various ways, by enough assistants and not being able to trust them with my clients and stuff to represent what I do and how I am with my clients, it just wasn't worth it anymore," she told People in a new interview published on Friday, January 2.