A widow's peak is a dominantly inherited V shape that dips down along the hairline. Female celebrities Marilyn Monroe, Alyson Hannigan, Fran Drescher, and Kourtney Kardashian all have widow's peaks, along with Keanu Reeves, Leonardo DiCaprio, and Colin Farrell on the men's front. Perhaps you have this genetic trait, too. If so, uncover some tips and techniques for making it work below.