"Acting feels really easy. I love being a mum, but it's much more intensive work than being an actress, going to work feels like you've got a day off. Not that I want a day a day off from being a mum, it's just perhaps I had this impression before that mums don't work. But they work much more than anyone." Black Swan star Natalie Portman admits parenting is more intensive than working as an actress. She is mother to two-year-old Aleph with husband Benjamin Millepied.