The Woman Who Has Styled Justin Bieber, Anita Hill, and the iPod | The New Yorker : Her clients talk about her as they would a guru. Olivia Wilde said, “She’ll be, like, ‘Are you looking for a change in your career? I think I can help guide that.’�” Wilde told me that last year, when she was in the process of directing her first feature, “Karla was, like, ‘Let’s start putting you in a strong shoulder, or a tux.’ She got that I didn’t want to be an ing�nue anymore.” Welch is confident in the contributions she has made to her clients’ successes. When she started working with Ruth Negga, in 2016, she said, “nobody knew who Ruth was, and all of a sudden she’s in a custom Marc Jacobs look. It set a trajectory for her presence, right up to her getting an Oscar nomination and going to the Oscars.”