Jessica Alba struck the perfect balance of laid back and polished while running errands in Beverly Hills yesterday. The style pro's crimson Joe's Jeans skinnies are an on-trend alternative to dark denim, and we love how she toned them down with a simple white tee and black tuxedo blazer. Our style tip for taking Alba's awesome look from day to night? You'll have to watch our video to find out. On Allison: Topshop top, H&M Jacket.