Claire Danes passed this role onto Kate Winslet……..
Claire Danes was asked to play Rose in the Titantic.
Al Pacino passed on the role as Han Solo in Star Wars (really, Al Pacino for THAT role, glad Harrison Ford was chosen.)
Julia Roberts and Kate Winslet were asked, but declined the role in Shakespeare In Love. Gwyneth Paltrow won an Oscar for that role.
Susan Dey as Sandy in Grease? She was asked, but passed to Olivia Newton John.
Meg Ryan, Michelle Pfeiffer and Darryl Hannah ALL turned the role in Pretty Woman. Julia Roberts said yes.