The 32-year-old Oscar-winning actress said unlike American men, Australians' warmth and openness make them so attractive to work with, reported Sun online.
"I've worked so much in Australia, a lot, so I know, I just love them. This is a generalisation but in my experience working with Australian actors is just that they're really open, warm, friendly and fun, don't take things too seriously and are really good at what they do," she said.
Portman worked with Edgerton on 'Star Wars' and also starred alongside Australian actor Eric Bana in 'The Other Boleyn Girl'.