In 1904 Pope Pius X banned these in the presence of churchmen.
Women with uncovered hair
Low-cut dresses
Cigarettes
Bare ankles
Low-cut dresses. The Pope decided that low cut dresses were not appropriate in church as they distracted others worshippers and also were contrary to the example of the Virgin Mary. The Vatican still bans shorts, mini-skirts, and revealing tops inside St. Peter’s.