When Kanye and Rihanna are involved, you know fashion is going to be of the utmost importance. So the behind the scenes teaser for their upcoming "FourFiveSeconds" video with Paul McCartney is basically just a walk through their wardrobe. As it turns out, the promotional artwork that arrived with the single was done on the spot during the video shoot. Not surprisingly, RiRi reveals it was denim-on-denim enthusiast Kanye who's responsible for the Americana aesthetic. "Kanye came up with the idea of doing some real street denim all American type look," she says, "This is actually his jacket that is some Sean Jean throwback vintage that is f*cking major. Denim never goes out of style: It's classic. It's iconic just like the f*cking Beatles." The "FourFiveSeconds" video was directed by fashion photographers Inez & Vinoodh who shot the portrait of Kanye and North West that accompanied his "Only One" single. Watch the promo clip above.