Pola Negri cloche hat will transport you back in time 100 years, to the unrepeatable 1920s. Elegant and simple, it is a great alternative for those who are are bored with ordinary hats or simple 
don’t look good in them ;)
The file contains written pattern in English and Polish with additional graphic chart for the lilac flower and some auxiliary pictures. It is suitable for intermediate crocheters, because, despite the rather simple pattern , it requires maintaining the right tension for each part. 
You can use the yarns of your choice, but for the best results I recommend using yarns with the same weight and thickness as advised in pattern files.