well..... do you not like lookin at a girl with a nice figure? How can you see it if the girls are wearin baggy manish clothes. Makes girls feel a bit more feminine and attractive.
I'm a woman who like a lot of others, doesn't like wearing tight clothes, because they are uncomfortable. There isn't a biological reason women should like wearing them, as I think the first answer indicates it is more often because that is how women are expected to dress.