Those examples are not fashions that were prevalent at the time of "Padre Pio", who was absurdly name-dropped, without any substantiation. I could go on forever about using Padre Pio as some "rule of faith", since not only has there never been more apocryphal material and "sayings" attributed to anyone in history more than to Padre Pio, but we go by what the Church holds and not Padre Pio. Padre Pio had his reasons, and there were points he was making, sometimes under God's inspiration, but at other times based on his own judgment.
So, given that Padre Pio was a sensational character due to the preternatural phenomena associated with him
What the Church holds was posted by Maria and is self-explanatory unless you care to explain it away.
Regarding Padre Pio, this is taken from this article on the Avrille Dominicans' website which is edifying reading for all:
https://dominicansavrille.us/those-who-serve-god-should-not-follow-the-fashions-part-1/In fact, when coming to confess, if their dresses were low-cut or too short, Padre Pio would send the women away, refusing them this Sacrament. As dresses in the 60’s became scantier and scantier, he sent larger and larger numbers of women away. It finally came to pass – since he was sending so many away – that his fellow friars posted a sign on the door of the Church which read:“By Padre Pio’s explicit wish, women must enter the confessional wearing skirts at least 8 inches below the knee….” If those whom he refused asked why he treated them in this manner, he would answer: “Don’t you know what pain it costs me to shut the door on anyone? The Lord has forced me to do so. I do not call anyone, nor do I refuse anyone either. There is someone else who calls and refuses them. I am His useless tool9.”
Of course there is no absolute certainty that Padre Pio said this, and it might take a little more research to achieve greater moral certainty for you. It rings true to me, both as regards Padre Pio and Catholic modesty.