[Need help with two movies]

If you don't know something, ask those who do. Can anyone help me with the names of two movies? The first is a musical. The only thing I can remember is an actress tap dancing in a top hat across or in front of baby grands. Does anyone know the name of the movie and the actress? The second movie has to do with a group of women in Nevada all there getting a divorce. I saw this movie years ago and have no idea of the title. Thanks So Much