Report: Reese Witherspoon 'furious' at 'Big Little Lies' co-star Nicole Kidman

Battle of the Hollywood divas!

A report claims that Reese Witherspoon is "furious" with her "Big Little Lies" co-star Nicole Kidman over promotion of their new show. Witherspoon is allegedly not too pleased after Kidman failed to promote the HBO series before its debut in February and instead took much of her time talking about her Oscar-nominated film "Lion."

"Reese is furious that Nicole hasn't done more to support Big Little Lies. All she's talked about in interviews is 'Lion.' Had Reese known that Nicole would put the show so far on the backburner, she would have cast some random," a source said.

During filming of the series, which took place in Monterey, California, there were also "some tense arguments" between the two actresses.

Nicole Kidman through the years:

14 PHOTOS
Nicole Kidman through the years
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Nicole Kidman through the years
SHANGHAI, CHINA - JULY 15: Actress Nicole Kidman attends Swisse promotional event on July 15, 2016 in Shanghai, China. (Photo by VCG/VCG via Getty Images)
SHANGHAI, CHINA - JULY 15: Actress Nicole Kidman attends Swisse promotional event on July 15, 2016 in Shanghai, China. (Photo by VCG/VCG via Getty Images)
NASHVILLE, TN - JUNE 08: Nicole Kidman attends the 2016 CMT Music awards at the Bridgestone Arena on June 8, 2016 in Nashville, Tennessee. (Photo by C Flanigan/WireImage)
NEW YORK, NY - JUNE 05: Keith Urban and Nicole Kidman attend 'Genius' New York premiere at Museum of Modern Art on June 5, 2016 in New York City. (Photo by Walter McBride/Getty Images)
Nicole Kidman arrives for the Costume Institute Benefit at The Metropolitan Museum of Art May 2, 2016 in New York. / AFP / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
NEW YORK, NY - MAY 02: Actress Nicole Kidman attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala at Metropolitan Museum of Art on May 2, 2016 in New York City. (Photo by Venturelli/FilmMagic)
NEW YORK, NY - APRIL 16: Actress/producer Nicole Kidman attends 'The Family Fang' Premiere during 2016 Tribeca Film Festival at John Zuccotti Theater at BMCC Tribeca Performing Arts Center on April 16, 2016 in New York City. (Photo by Gilbert Carrasquillo/FilmMagic)
LAS VEGAS, NEVADA - APRIL 03: Actress Nicole Kidman attends the 51st Academy Of Country Music Awards at MGM Grand Garden Arena on April 3, 2016 in Las Vegas, Nevada. (Photo by C Flanigan/FilmMagic)
LONDON, ENGLAND - FEBRUARY 21: Nicole Kidman with her Best Actress in a Play award for Photograph 51 during the 16th Annual WhatsOnStage Awards at The Prince of Wales Theatre on February 21, 2016 in London, England. (Photo by David M. Benett/Dave Benett/Getty Images)
Actress Nicole Kidman attends the 22nd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 30, 2016 in Los Angeles, California. AFP PHOTO / MARK RALSTON / AFP / MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
CANNES, FRANCE - MAY 14: Actress Nicole Kidman attends the Opening Ceremony and the 'Grace of Monaco' premiere during the 67th Annual Cannes Film Festival on May 14, 2014 in Cannes, France. (Photo by Gisela Schober/Getty Images)
SHANGHAI, CHINA - JUNE 15: (CHINA OUT) Actress Nicole Kidman attends 'Grace of Monaco' premiere during the 17th Shanghai International Film Festival on June 15, 2014 in Shanghai, China. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)
Australian actress Nicole Kidman arrives on the red carpet of Shanghai International Film Festival openning ceremony in Shanghai on June 14, 2014. Kidman, who is promoting 'Grace of Monaco' at the festival, received an award for outstanding contribution to film. Shanghai kicked off its annual film festival, a nine-day event with a heavy emphasis on Chinese cinema and a sprinkling of Hollywood stars promoting their latest works. CHINA OUT AFP PHOTO (Photo credit should read STR/AFP/Getty Images)
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"If the show doesn't make any waves or get better ratings, it will probably mark the end of Reese and Nicole's joint ventures."

The HBO hit, a mini series about three mothers of first graders whose lives unravel to the point of murder, has received phenomenal ratings since its debut in February. The premiere crushed ratings, with a record 2.1 million viewers.

Shailene Woodley also stars alongside the Hollywood heavyweights.

Tension between Reese and Nicole allegedly reached an all-time high at the 2017 Oscars. Kidman, who was nominated for Best Actress, allegedly told people to keep Witherspoon away from her.

Reese Witherspoon through the years:

18 PHOTOS
Reese Witherspoon and daughter Ava Phillippe through the years
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Reese Witherspoon and daughter Ava Phillippe through the years
LOS ANGELES, CA - DECEMBER 03: Ava Phillippe, Reese Witherspoon, Deacon Phillippe, Tennessee James Toth and Jim Toth attend the premiere Of Universal Pictures' 'Sing' on December 3, 2016 in Los Angeles, California. (Photo by Todd Williamson/Getty Images)
Ava Elizabeth Phillippe, the daughter of actress Reese Witherspoon, attends the Universal Studio premiere of 'Sing' in Los Angeles, California, on December 3, 2016. / AFP / VALERIE MACON (Photo credit should read VALERIE MACON/AFP/Getty Images)
In good company at the #SingMovie premiere last night ❤️🎉 P.S. It's a wonderful family film for the holidays!
Celebrating our sweet Tennessee’s 4th birthday last night! 🎂🎈🎉 My forever favorite #NinjaTurtle 💋🐢 #TMNT #FamilySandwich
Can't believe my baby is 17 today! I love you, @avaphillippe ❤️ Your gorgeous heart and loving spirit never cease to amaze me! I'm so lucky the universe let me be your mother. 😘 #HBD #17DancingQueen
Mother daughter time ❤️❤️❤️❤️❤️❤️❤️❤️
LOS ANGELES, CA - OCTOBER 30: Actress Reese Witherspoon with daughter Ava and son Deacon arrives at the 29th American Cinematheque Award Honoring Reese Witherspoon at the Hyatt Regency Century Plaza on October 30, 2015 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
congrats! #specialnight
LOS ANGELES, CA - OCTOBER 30: Honoree Reese Witherspoon (L) and Ava Phillippe attend with FIJI Water at 29th American Cinematheque Awards honoring Reese Witherspoon on October 30, 2015 in Los Angeles, California. (Photo by Charley Gallay/Getty Images for FIJI Water)
LOS ANGELES, CA - DECEMBER 20: Reese Witherspoon with her children, Deacon Phillippe, Ava Phillippe and Tennessee Toth are seen on December 20, 2013 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
LOS ANGELES, CA - OCTOBER 19: Ava Elizabeth Phillippe and Reese Witherspoon sighting on October 19, 2011 in Los Angeles, California. (Photo by JB Lacroix/WireImage)
©2010 RAMEY PHOTO Beverly Hills, California, December 12, 2010 Reese Witherspoon with boyfriend Jim Toth and her kids Deacon and Ava out on a Sunday morning stroll. PGpg68 (Photo by Philip Ramey/Corbis via Getty Images)
LOS ANGELES, CA - SEPTEMBER 07: Reese Witherspoon takes her daughter Ava Phillipe and son Tennessee Toth to the country market in Brentwood on September 07, 2013 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
©2010 credit NCNA Actress Reese Witherspoon touches her star with daughter Ava and son Deacon during an unveiling ceremony honoring Witherspoon with the 2,425th star on the Hollywood Walk of Fame in Los Angeles on December 1, 2010. XYZ (Photo by Philip Ramey/Corbis via Getty Images)
©2010 RAMEY PHOTO Beverly Hills, California, October 24, 2010 REESE WITHERSPOON out with her kids DEACON and AVA, as they walk in Santa Monica on their way to meet Reese's boyfriend, JIM TOTH for lunch. PGpg68 (Photo by Philip Ramey/Corbis via Getty Images)
REVOLUTIONPIX/©2010 RAMEY PHOTO EXCLUSIVE! NO WEB USE WITHOUT AGREED FEE! Beverly Hills, California, August 27, 2010 Reese Witherspoon shops with her children, Ava and Deacon and their French Bulldog Coco Chanel, on Montana and then order take out food from Maria's Italian Kitchen in Brentwood, where their pet was not allowed. Reese wear a 'Stand Up Against Cancer' hoodie, Charity that she will support on September 10 in Los Angeles. REV/100827002 (Photo by Philip Ramey/Corbis via Getty Images)
WASHINGTON - APRIL 05: Actress Reese Witherspoon (2nd L) and her children Deacon Reese Phillippe (3rd L) and Ava Elizabeth Phillippe (3rd R) attend the annual White House Easter Egg Roll at the South Lawn April 5, 2010 in Washington, DC. The White House Easter Egg Roll is a tradition dating back to 1878 during the presidency of President Rutherford B. Hayes. (Photo by Alex Wong/Getty Images)
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"You could cut tension with a knife," one insider claimed.

The blonde beauties weren't spotted together at the glitzy affair in late February, further fueling rumors that there's trouble behind-the-scenes.

However, a representative close to the two revealed all is well: "Everyone is thrilled to the back teeth with 'Big Little Lies.' They're great friends, they love each other and they love the way each other works."

Just two months ago, Kidman couldn't stop raving about the Draper James owner at the TCAs in California: "We're very, very close friends. We're able to talk about everything."

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