“Armchair Expert” podcast Monday to talk about her childhood, parenthood, and the pitfalls of growing up a star. The Jerusalem-born “Garden State” star turned 12 on the set of her first big film, “Leon: The Professional” in 1994, and revealed to Shephard that she “didn’t allow the full expression of who I was at that time.” Portman went on to explain how the industry took a toll on her intimate development.“Being sexualized as a child took away from my own sexuality because it made me afraid,” said the A-lister, who won an Oscar for her portrayal of a twisted femme fatale in “Black Swan,” and played similarly troubled characters like in “Beautiful Girls,” when she was 14. “So many people had this impression of me that I was super-serious.