Cobie Smulders and Eva Longoria proved over the weekend that, when in doubt, wear black and white. Cobie attended a screening of Delivery Man in a strapless white dress with a black box print, which she accented thanks to a few choice black accessories. Meanwhile, Eva Longoria showed that covering up can still be sexy in a long-sleeved dress whose dichromatic design accentuated her figure at the Museo Jumex opening in Mexico. A black satin clutch and pointed-toe pumps completed her look. Whose look reigned supreme? Unlike their dresses, sometimes the choice isn't so black and white.