Gucci, meanwhile, explores a more retro style with an A-line dress in chartreuse-colored patent leather. Its shiny finish and clean lines evoke the fashions of the 1960s. At Ganni, this shade of green ...

Overalls have a reputation for being juvenile, but the truth is this one-and-done piece can be as dressy or as casual ... more color, invest in a few pastel pieces. A mint green dress, like ...