Lucky Us - Amy Bloom

When Eva's mother abandons her on Iris's front porch, the girls don't seem to have much in common - except, they soon discover, a father. Thrown together with no mothers to care for them and a father who could not be considered a parent, Iris and Eva become one another's family. Iris wants to be a movie star; Eva is her sidekick. Together, they journey across 1940s America from scandal in Hollywood to the jazz clubs and golden mansions of Long Island, stumbling, cheating and loving their way through a landscape of war, betrayals and big dreams.