Yes, when it comes to formal clothing there are women who wear Saris everyday! but back home No. But not all women wear Saris in India esp Urban India and fashionable Saris are also worn for parties ;)
Depends if its the church wedding or a civil wedding. If its a civil bride can wear anything she wants and if it's a church wedding it depends on religion. For example, Christians would usually wear white dress and in Hinduism they would wear red saris.