Gary Cooper: a modern dandy. Notice the subtle hues, tie complimenting the pinstripe suit, just enough cuff showing beyond his sleeve, and sharp handkerchief square.
Oscar Wilde: a Victorian Aesthete. Notice the exaggerated collar, thick tie knot, large boutonnière, lots of shirt cuff, busy handkerchief square, and loud pin stripe slacks. Notice also the affected way he hold his cigarette as opposed to Gary Cooper. [and this photo is from later in his career- he was more flamboyant when he was young].