Why sneakers are so famous among woman?

A few years ago, plenty of women didn’t even own sport shoes in their wardrobe, unless they were doing sport activities. Nowadays, the trend is completely different. Tons of women not only repeatedly own more than 1 pair of sneakers, but also wear them almost every day! Women wearing sneakers could be easily seen not just on Saturday having a bike trip, but also in libraries, coffee shops and even pubs and clubs! This shows, that sneakers are being worn as well as that they can be worn really everywhere! What has happened? What are the reasons of such rapid change?