Why Julie Harris?
I just watched this movie again and it always bothered me a bit but last time I watched it, it bothered me the most. As an actress she's great but as the female lead she just looks way to bland and old(old for the age she's playing) compared to Dean. I even thought that Lois Smith who plays the girl in the bar would have been a better match. There are screen tests with Dean and Smith that have more chemistry than Harris and Dean.
There were probably loads of actresses at the time who would have been better for the part. I think Julie Harris' acting is brilliant but you wouldn't cast the superb actress Meryl Streep in the part of a 30 year old anymore just because she is a brilliant actress.
Why did they cast Harris?