Hip hop continues to break down walls. Nas and his father, jazz-blues musician Olu Dara, are featured together in a new Gap holiday ad campaign called "Love Comes in Every Shade." Their ad and poster, called "Fatherly Love," features them embracing. It's another impactful ad for Gap, which was an early adopter in embracing hip hop and soul stars for its marketing. Click on to check out some of the other music stars who have appeared in landmark ads for the apparel company.