I can't tell if she's a real blonde or not, but she certainly has a very erotic and sultry look about her. Woody Allen definitely brought out the loveliness she possesses in the two films he featured her in, "Match Point" and one of my all-time favorites "Vicky Cristina Barcelona".
Here she is on location in Spain with The Woodman himself-
I love her as an actress. She has the ability to quietly bring out great performances from the other actors she works with. This is what makes her stand out in my opinion. Not only does she look loook mahvelous, dahling , but she is great at what she does. We know Hollywood loves blonde white girls with big tits, but this is not the only reason she gets work. She can actually act.