Dakota Johnson stepped out in Los Angeles on April 3 looking like she raided the world's chicest closet. The actress paired a ruffled green blouse with a red top-handle bag, black ballet flats and oval Prada sunglasses. But the real star of the outfit? A pair of The Row's Gala Pants, those impossibly elegant wide-leg trousers that have become an it-girl staple this spring. They're the silhouette of the season - and we can see why.