Warm summer outfit in style of late 1960s with real vintage wide brim hat in style of Lady Beltham

It seems to me that this hat is something in the style of Gabrielle Chanel's favorite model - Marie-Hélène Arnaud. In particular, she wore something similar in the first film from the French trilogy "Fantômas" directed by André Henri Hunebelle. Probably many people, who watched this film, liked the uninhibited, hot and very free in clothes (at that time period) blonde Helen, the bride of the protagonist, performed by Mylene Demongeot. But my childhood idol has been the cold, proud, elegant and mysterious Lady Beltham, played by Marie-Hélène Arnaud. In spite of negligible screen time and none of a single line, she was incomparable! With what dignity she wears Chanel-style outfits and a hat similar to mine, probably Chanel-style too! It seems to me that precisely because of the absence of Marie-Hélène Arnaud, subsequent films are no longer so interesting. In any case, I think Marie-Hélène Arnaud could very well have worn this my outfit, which also has a bit o...