From sumptuous cobalt and indigo to navy and turquoise—and from fantastically patterned jackets to dresses that follow the body like water—a blue mood has never seemed quite so appealing.

With captivating blue hues ... during a formal wedding. 7. **ML Monique Lhuillier Floral Embroidered Mesh Gown**: For a spring or summer wedding, the ML Monique Lhuillier dress is a favorite.