Brilliant two-tone black-and-white print, like the sweater here, can spice up an otherwise-boring outfit while still looking professional, keep the rest of the outfit simple and subdued

Don't be afraid of bold prints. Although you should avoid anything too bright or flashy (animal prints, for example, usually aren't interview-appropriate, unless they are extremely subtle), a two-tone black-and-white print, like the sweater here, can spice up an otherwise-boring outfit while still looking professional. If you're going to wear a bold print, limit your outfit to one print only and, keep the rest of the outfit simple and subdued.