Natalie Portman shows off massive baby bump at 'Jackie' screening

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Natalie Portman continued to show off her ever-growing baby bump this week.

At a screening of her new film, "Jackie," in Washington, DC, Portman rocked the tight, long-sleeved gray Isabella Oliver Nextor Dress that flaunted her gorgeous curves and massive baby bump.

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The actress is expecting her second child with husband, Benjamin Millepied, and they already have a five-year-old son, Aleph Portman-Millepied, together.

"Jackie," which opens today, has been receiving stellar reviews from critics just as the Oscar race begins to really heats up heading into the beginning of awards season. Specifically, Portman herself has been getting Oscar buzz for her portrayal of Jacqueline Kennedy in the wake of her husband, President John F. Kennedy's, assassination.

See photos of Natalie Portman's growing baby bump:

13 PHOTOS
Natalie Portman's growing baby bump
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Natalie Portman's growing baby bump
WASHINGTON, DC - DECEMBER 01: Natalie Portman walks on stage for a panel discussion during the 'Jackie' Washington, DC Premiere at The Newseum on December 1, 2016 in Washington, DC. (Photo by Leigh Vogel/Getty Images)
WASHINGTON, DC - DECEMBER 01: Juan de Dios Larrain, Mickey Liddell, Noah Oppenheim, Natalie Portman, Max Casella, Pablo Larrain, and Scott Franklin attend the 'Jackie' Washington, DC premiere at The Newseum on December 1, 2016 in Washington, DC. (Photo by Leigh Vogel/Getty Images)
NEW YORK, NY - NOVEMBER 28: Natalie Portman attends the 26th Annual Gotham Independent Film Awards at Cipriani Wall Street on November 28, 2016 in New York City. (Photo by Roy Rochlin/FilmMagic)
NEW YORK, NY - NOVEMBER 28: Actress Natalie Portman is seen on November 28, 2016 in New York City. (Photo by Raymond Hall/GC Images)
LOS ANGELES, CA - NOVEMBER 16: Natalie Portman is seen on November 16, 2016 in Los Angeles, California. (Photo by BG005/Bauer-Griffin/GC Images)
BEVERLY HILLS, CA - NOVEMBER 09: Actress Natalie Portman arrives at the 30th Israel Film Festival Anniversary Gala Awards Dinner at the Beverly Wilshire Four Seasons Hotel on November 9, 2016 in Beverly Hills, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CA - NOVEMBER 06: Natalie Portman arrives at the 20th Annual Hollywood Film Awards on November 6, 2016 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
BEVERLY HILLS, CA - NOVEMBER 06: Natalie Portman attends the 20th Annual Hollywood Film Awards - Arrivals at The Beverly Hilton Hotel on November 6, 2016 in Beverly Hills, California. (Photo by David Crotty/Patrick McMullan via Getty Images)
LOS ANGELES, CA - OCTOBER 27: Natalie Portman is seen on October 27, 2016 in Los Angeles, California. (Photo by BG015/Bauer-Griffin/GC Images)
NEW YORK, NY - OCTOBER 13: Actress Natalie Portman attends the 54th New York Film Festival - 'Jackie' screening on October 13, 2016 in New York City. (Photo by Brent N. Clarke/FilmMagic)
TORONTO, ON - SEPTEMBER 11: Natalie Portman arrives at the 2016 Toronto International Film Festival - 'Jackie' premiere held at Winter Garden Theatre on September 11, 2016 in Toronto, Canada. (Photo by Michael Tran/Getty Images)
VENICE, ITALY - SEPTEMBER 08: Natalie Portman attends the premiere of 'Planetarium' during the 73rd Venice Film Festival at Sala Grande on September 8, 2016 in Venice, Italy. (Photo by Stefania D'Alessandro/WireImage)
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Portman has been making the rounds to support the film ever since it premiered at Cannes earlier this year and, in turn, she has been showing off her steadily-growing baby bump in glamorous frocks for months now.

One big question looms as the countdown to February's Academy Awards continues to tick: Will Portman give birth to her second child before or after Hollywood's biggest night? The star was memorably pregnant when she accepted her first Oscar for Best Actress in "Black Swan" back in 2010.

See more photos of Natalie Portman through the years:

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Natalie Portman through the years
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Natalie Portman through the years
BEIJING, CHINA - APRIL 17: (CHINA OUT) American actress Natalie Portman attends Sino-Foreign Film Co-ptoduction Forum during the 6th Beijing International Film Festival on April 17, 2016 in Beijing, China. (Photo by VCG/VCG via Getty Images)
BEIJING, CHINA - APRIL 16: (CHINA OUT) American actress Natalie Portman arrives at the red carpet of the 6th Beijing International Film Festival on April 16, 2016 in Beijing, China. (Photo by VCG/VCG via Getty Images)
SILVER SPRING, MD- MARCH 06: Actress Natalie Portman attends a screening of 'A Tale of Love and Darkness' at AFI Silver Theater on March 6, 2016 in Silver Spring, Md. (Kris Connor/WireImage)
NEW YORK, NY - JANUARY 27: Natalie Portman arrives at the the New York premiere of 'Jane Got a Gun' at The Museum of Modern Art on January 27, 2016 in New York City. (Photo by Dave Kotinsky/WireImage)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0409 -- Pictured: Actress Natalie Portman on January 27, 2016 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - JANUARY 27: Actress Natalie Portman is seen on 'Good Morning America' on January 27, 2016 in New York City. (Photo by Raymond Hall/GC Images)
NEW YORK, NY - JANUARY 26: Actress Natalie Portman attends the 2016 New York Jewish Film Festival closing night screening of 'A Tale Of Love And Darkness' at Walter Reade Theater on January 26, 2016 in New York City. (Photo by Michael Stewart/Getty Images)
PARIS, FRANCE - JANUARY 24: Actress Natalie Portman attends the 'Jane Got A gun' Premiere at Cinema UGC Normandie on January 24, 2016 in Paris, France. (Photo by Marc Piasecki/WireImage)
TORONTO, ON - SEPTEMBER 10: Actress Natalie Portman attends the 'A Tale Of Love And Darkness' premiere during the 2015 Toronto International Film Festival at the Winter Garden Theatre on September 10, 2015 in Toronto, Canada. (Photo by George Pimentel/WireImage)
PARIS, FRANCE - SEPTEMBER 24: Actress Natalie Portman attends the Ballet National de Paris Opening Season Gala at Opera Garnier on September 24, 2015 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
TORONTO, CANADA - SEPTEMBER 09: Actress Natalie Portman attends TIFF Soiree Charity Event during the 2015 Toronto International Film Festival at TIFF Bell Lightbox Cultural Center on September 09, 2015 in Toronto, Canada. PHOTOGRAPH BY EXImages / Barcroft Media UK Office, London. T +44 845 370 2233 W www.barcroftmedia.com USA Office, New York City. T +1 212 796 2458 W www.barcroftusa.com Indian Office, Delhi. T +91 11 4053 2429 W www.barcroftindia.com (Photo credit should read EXImages / Barcroft Media / Barcroft Media via Getty Images)
CAP D'ANTIBES, FRANCE - MAY 19: Natalie Portman attends the De Grisogono Party at the 67th Annual Cannes Film Festival on May May 19, 2015 in Cap d'Antibes, France. (Photo Luca Teuchmann/WireImage)
US actress Natalie Portman attends the LVMH Young Fashion Designer awards ceremony in Paris, on May 22, 2015. AFP PHOTO / DOMINIQUE FAGET (Photo credit should read DOMINIQUE FAGET/AFP/Getty Images)
CANNES, FRANCE - MAY 17: Natalie Portman attends the Photocall for 'A Tale of Love and Darkness' at 2015 Cannes Film Festival on May 17, 2015 in Cannes, France. PHOTOGRAPH BY Peter / Barcroft Media (Photo credit should read Peter / Barcroft Media via Getty Images)
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