Dorothy's Hair
I was trying to think why would anyone wear their hair in such a style - but then it dawned on me that perhaps she was trying to emulate Mia Farrow in Rosemary's Baby.
I don't believe it was ever stated what year this is supposed to take place. I thought I saw somewhere that it was supposed to be '63. However, Frank mentions that Dorothy used to be a flower child - which was roughly 1967 (summer of love). Rosemary's Baby came out in '68 so perhaps that was the inspiration?
If that's the case - another point for Mr. Penn.
BTW - Viggo OMG is he a sexy man in this one.