How to dress French. You just simply want to go in to your closet and find something very slim fitting. As you can see this is very form fitting to her body, the pants, the top. You can certainly do a long sleeve, turtlenecks are a great option, anything very form fitting to the body. Dressing French is very much about showing off your shape. You also want to find a few other details, some lovely heels, some chunky jewelry and of course a cute little beret really sets that off. You could see that very French look. And that's how to dress French.