I just watched this trailer for the movie "Plein Soleil" a French film from 1962 set in small coastal towns in Italy about a sordid love triangle between three "beautiful modern people"... anyhow, the style is very classic and chic...very Nautical and French!  I love her classic vintage 60s white dress and the red and white striped tee she wears in one scene with just a simple delicate necklace. Image source: Pinterest