EXCLUSIVE: Natalie Portman on 'Jackie,' Fame and Whether Baby No. 2 Will Be Her Awards Season Good Luck Charm

Zach Seemayer
Entertainment Tonight

Natalie Portman is already getting Oscar buzz for her portrayal of former First Lady Jackie Kennedy in the upcoming biopic, Jackie.

The actress, who is pregnant with her and husband Benjamin Millepied's second child, previously won the Best Actress Oscar in 2011, when she was expecting the couple's first child, son Aleph. So, with history beginning to repeat itself, Portman opened up about whether she thinks her babies might be her lucky charm.

WATCH: Natalie Portman Debuts Baby Bump on Red Carpet at Venice Film Festival

"I think they're good luck charms in life," Portman, 35, told ET's Nischelle Turner on Sunday while promoting her upcoming biopic. "They're the best things. The best main miracles."

"I don't necessarily connect it [to winning an Oscar]," she added. "But it is certainly a joy."

While Portman doesn't ascribe any mystical, luck-enhancing properties to her pregnancy, she did admit that she's "superstitious," and that early awards season speculation for Jackie is something she's excited about.

"It's obviously flattering to have positive response to the film because that's what you want when you're making a film is to have audiences relate to something emotionally and be moved by it and [have it] connect with people," Portman shared. "That's what you dream about when you're making something."

WATCH: Natalie Portman Admits Playing Jackie Kennedy Was 'Challenging,' Gushes About Hillary Clinton

In the film, Portman plays the celebrated first lady during her days in the White House and following John F. Kennedy's assassination.

To prepare for the role, Portman watched several interviews with Jackie, as well as a tour that she gave of the White House as part of a TV special that aired in 1962. Portman said that it was during that tour that the first lady seemed to have some sort of prophetic understanding of what would be her husband's fate the following year.

"She talks about, you know, how first ladies have to leave the White House. Always have to move out. And she talks about Abraham Lincoln a lot," Portman explained. "Watching it in retrospect, you get the sense that she almost had this instinct that something was coming."

PHOTOS: Stars Take On Real-Life Roles

Aside from recounting the details of Kennedy's life, Jackie also shows the public figure's reluctance to bask in the spotlight, as well as how fame impacted her personality and her life, something Portman can certainly relate to.

"People don't understand what fame is until they live it and it's a very different experience of course than what it seems like from the outside," she shared.

The actress also praised the how the film "doesn't try and just idolize" the former first lady.

"It doesn't try to tell you what to think about her," she explained. "It allows her to be a human being and you see all of these different aspects of her, and it also leaves a lot of mystery."

WATCH: Natalie Portman Is Perfectly Poised as Jackie Kennedy in First Teaser Trailer for 'Jackie'

Jackie hits theaters Dec. 2.

Portman opened up to ET at a screening of Jackie in New York City last week, where she revealed that she was "very nervous" to take on the iconic role. Check out the video below to hear more.

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