Jennifer Aniston 'burst into tears' after recording song with Dolly Parton (Exclusive)

Jennifer Aniston has been in dozens of films throughout her career, but Dumplin' marked a big first. 

The actress stepped into the recording booth at Dolly Parton's request, to sing "Push and Pull" with her co-star Danielle Macdonald, and as she told ET, it ushered out the waterworks. 

"[I was so nervous] but I sang through it and then got my voice. I literally couldn't have a squeak come out, and then when we finished, I remembered, I just burst into tears," Aniston told ET's Nischelle Turner at the Dumplin' junket at the Four Seasons Beverly Hills on Tuesday. 

"She did get emotional after she was done," Parton -- who crafted the soundtrack -- confirmed, calling the actress a "real pro" in the booth. 

"It was terrifying and fun and all of it... it was great," Aniston recalled. "[I was] fearless, yes, or fearful, depending on how you look at it. But I had Dolly and Linda Perry there, who were just patient and wonderful."

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Jennifer Aniston out and about
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Jennifer Aniston out and about
LOS ANGELES, CA - OCTOBER 22: Jennifer Aniston attends the 2018 InStyle Awards at The Getty Center on October 22, 2018 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 22: Jennifer Aniston attends the 2018 InStyle Awards at The Getty Center on October 22, 2018 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 22: Jennifer Aniston arrives at the 2018 InStyle Awards at The Getty Center on October 22, 2018 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - SEPTEMBER 15: Jennifer Aniston and Netflix Chief Content Officer Ted Sarandos attend Ted Sarandos' 2018 Annual Netflix Emmy Nominee Toast on September 15, 2018 in Los Angeles, California. (Photo by Emma McIntyre/Getty Images for Netflix)
COMO, ITALY - JULY 30: Jennifer Aniston is seen on set filming 'Murder Mystery' on July 30, 2018 in Como, Italy. (Photo by Emilio Andreoli/GC Images)
HOLLYWOOD, CA - JUNE 07: Actress Jennifer Aniston arrives at the American Film Institute's 46th Life Achievement Award Gala Tribute to George Clooney on June 7, 2018 in Hollywood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
HOLLYWOOD, CA - JUNE 07: Jennifer Aniston attends 46th AFI Life Achievement Award Gala Tribute on June 7, 2018 in Hollywood, California. (Photo by Presley Ann/Patrick McMullan via Getty Images)
HOLLYWOOD, CA - JUNE 07: Courteney Cox (L) and Jennifer Aniston speak onstage during the American Film Institute's 46th Life Achievement Award Gala Tribute to George Clooney at Dolby Theatre on June 7, 2018 in Hollywood, California. 288523 (Photo by Kevin Mazur/Getty Images for Turner)
MALIBU, CA - JUNE 02: Jennifer Aniston attends the CHANEL Dinner Celebrating Our Majestic Oceans, A Benefit For NRDC on June 2, 2018 in Malibu, California. (Photo by Rich Fury/Getty Images)
MALIBU, CA - JUNE 02: Jennifer Aniston (L) and Courtney Cox attend the CHANEL Dinner Celebrating Our Majestic Oceans, A Benefit For NRDC on June 2, 2018 in Malibu, California. (Photo by Rich Fury/Getty Images)
INGLEWOOD, CA - APRIL 19: Actress Jennifer Aniston attends WE Day California at The Forum on April 19, 2018 in Inglewood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
Actress Jennifer Aniston speaks on stage at the WE Day California at The Forum, in Inglewood, California, on April 19, 2018. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
BEVERLY HILLS, CA - JANUARY 07: In this handout photo provided by Netflix, Jennifer Aniston and Netflix Chief Content Officer, Ted Sarandos attend the Netflix Golden Globes after party at Waldorf Astoria Beverly Hills on January 7, 2018 in Beverly Hills, California. (Photo by Netflix via Getty Images)
BEVERLY HILLS, CA - JANUARY 07: In this handout photo provided by NBCUniversal, Presenters Carol Burnett and Jennifer Aniston onstage during the 75th Annual Golden Globe Awards at The Beverly Hilton Hotel on January 7, 2018 in Beverly Hills, California. (Photo by Paul Drinkwater/NBCUniversal via Getty Images)
WEST HOLLYWOOD, CA - DECEMBER 07: Jennifer Meyer and Jennifer Aniston attend Gilt.com, Jennifer Meyer & Jenna Dewan Tatum Launch Exclusive Jewelry Collection Benefitting Baby2Baby at Sunset Tower Hotel on December 7, 2017 in West Hollywood, California. (Photo by Stefanie Keenan/Getty Images for Gilt.com)
JIMMY KIMMEL LIVE! - ABCs Jimmy Kimmel Live! features a week of guest hosts filling in for Jimmy, starting Monday, December 4. The guest host for Thursday, December 7 was Melissa McCarthy with guests Octavia Spencer ('The Shape of Water'), Actor Dave Franco ('The Disaster Artist') and musical guest Hanson. (Randy Holmes/ABC via Getty Images) JENNIFER ANISTON, MELISSA MCCARTHY
HOLLYWOOD, CA - JULY 26: Actress Jennifer Aniston attends the ceremony honoring Jason Bateman with Star on the Hollywood Walk of Fame on July 26, 2017 in Hollywood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
HOLLYWOOD, CA - JULY 26: Will Arnett and Jennifer Aniston attend the ceremony honoring Jason Bateman with Star On The Hollywood Walk Of Fame on July 25, 2017 in Hollywood, California. (Photo by JB Lacroix/WireImage)
HOLLYWOOD, CA - JULY 26: Jennifer Aniston and Justin Theroux attend the ceremony honoring Jason Bateman with a Star on The Hollywood Walk of Fame held on July 26, 2017 in Hollywood, California. (Photo by Michael Tran/FilmMagic)
BEVERLY HILLS, CA - FEBRUARY 26: Jennifer Aniston attends the 2017 Vanity Fair Oscar Party hosted by Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 26, 2017 in Beverly Hills, California. (Photo by JB Lacroix/WireImage)
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The 49-year-old actress said the experience brought back childhood memories of singing into hairbrushes and wanting to be a rock star. "I sort of had this weird dream of a lifetime just come crashing in on me," she said. "But boy... bow to all of those guys who do that. It's quite fab. It's fantastic." 

Dumplin' stars Aniston as a former beauty queen whose plus-size teenage daughter, nicknamed "Dumplin'" (Macdonald), signs up for her mom's pageant in protest. The role required the former Friends star to speak in a southern accent -- and it got a big stamp of approval from Parton. 

"I love picking up on accents anyway. It's something I've always been able to do a little, and that one in particular. But I also have a fantastic dialect coach who just sort of would give me little tips here and there," Aniston explained. "[The toughest thing] is not knowing if you got it right." 

"I thought she did great, and I told her that. I went to see it with her... I was really impressed and I knew she worried about it," Parton recalled. "She needed to hear it from somebody who knew, so I leaned in and said, 'Your accent is great, you did a great job,' and she said, 'Whew!' but I meant it."  

Stepping into the shoes of a beauty queen came a little easier. 

"Especially if you're doing award shows, it's very much like what she's talking about -- the dresses and the beauty pageants, don't you think?" Parton asked Aniston. " It's kind of similar."

"It's a performance," Aniston agreed. "[It's] a little bit of going out there and putting on your sparkly, pretty self." 

Dumplin' launches on Netflix and in select theaters on Friday. 

85 PHOTOS
Dolly Parton over the years
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Dolly Parton over the years
1967: Country singer Dolly Parton with her collaborator Porter Wagoner on the set of his TV show in circa 1967. Mr. Wagoner is wearing a Nudie Suit designed by Nudie Cohn of Nudie's Rodeo Tailors. (Photo by Michael Ochs Archives/Getty Images)
NASHVILLE, TN - CIRCA 1967: Country singers Dolly Parton and Porter Wagoner perform onstage in circa 1967 in Nashville, TN. Mr. Wagoner is wearing a Nudie suit desgned by Nudie Cohn of Nudie's Rodeo Tailors. (Photo by Michael Ochs Archives/Getty Images)
CIRCA 1970: Country singer Dolly Parton poses for a portrait in circa 1970. (Photo by Michael Ochs Archives/Getty Images)
UNSPECIFIED - JANUARY 01: (AUSTRALIA OUT) Photo of Porter WAGONER and Dolly PARTON (Photo by GAB Archive/Redferns)
*** Local Caption *** Watscan - - 29/07/2009 (Photo by Daily Mirror/Mirrorpix/Mirrorpix via Getty Images)
Dolly Parton, U.S. country singer-songwriter, singing into a microphone during a live concert performance at the Wembley Empire Pool, London, England, Great Britain, in April 1976. (Photo by Andrew Putler/Redferns/Getty Images)
(Original Caption) Country-and-western singer Dolly Parton on stage performing. Photograph, 1977.
UNSPECIFIED - JANUARY 01: (AUSTRALIA OUT) Photo of Dolly PARTON and Porter WAGONER and Dolly PARTON; L-R. Porter Wagoner, Dolly Parton (Photo by GAB Archive/Redferns)
UNSPECIFIED - JANUARY 01: Photo of Dolly PARTON (Photo by Gems/Redferns)
(NO SUB AGENCIES IN UK, FRANCE, HOLLAND, SWEDEN, FINLAND, JAPAN.) Dolly Parton 1977 during Dolly Parton File Photos in London, California. (Photo by Chris Walter/WireImage)
Dolly Parton on 'Dolly' in 1987. (Photo by John Seakwood/ABC via Getty Images)
NEW YORK, NY - CIRCA 1977: Dolly Parton circa 1977 in New York City. (Photo by Allan Tannenbaum/IMAGES/Getty Images)
THE TONIGHT SHOW STARRING JOHNNY CARSON -- Pictured: Singer Dolly Parton performs on January 19, 1977 -- (Photo by: NBC/NBCU Photo Bank via Getty Images)
Dolly Parton at the Hollywood Paladium in Hollywood, California (Photo by Ron Galella/WireImage)
American musician Dolly Parton peforms onstage at the Ivanhoe Theater, Chicago, Illinois, April 29, 1977. (Photo by Paul Natkin/Getty Images)
16th May 1977. (Photo by Daily Mirror/Mirrorpix/Mirrorpix via Getty Images)
LOS ANGELES - JULY 7: Singer, songwriter and actress Dolly Parton poses for a portrait during the cover session for her album 'Here You Come Again' on July 7, 1977 in Los Angeles, California. (Photo by Ed Caraeff/Getty Images)
DETROIT - SEPTEMBER 1977: Country Singer Dolly Parton poses for a portrait before performing in September 1977 in Detroit, Michigan. (Photo by Michael Marks/Michael Ochs Archives/Getty Images)
Dolly Parton during Dolly Parton Performs at Tech Coliseum - October 22, 1977 at Georgia Tech's Alexander Coliseum in Atlanta, Georgia, United States. (Photo by Tom Hill/WireImage)
LOS ANGELES - 1978: Country singer Dolly Parton poses for a portrait session in 1978 in Los Angeles, California. (Photo by Harry Langdon/Getty Images)
UNSPECIFIED - JANUARY 01: Photo of Dolly PARTON (Photo by RB/Redferns)
New York December 5th 1980. Dolly Parton at film premiere of 'Nine to Five' (Photo by Tom Wargacki/WireImage)
Actresses Lily Tomlin, Dolly Parton and Jane Fonda attending the premiere of 9 to 5 on December 14, 1980 at the Sutton Theater in New York City, New York. (Photo by Ron Galella/WireImage)
NEW YORK, NY - CIRCA 1981: Dolly Parton circa 1981 in New York City. (Photo by Robin Platzer/Images/Getty Images)
LONDON, UNITED KINGDOM - MARCH 4: Dolly Parton performs on stage at The Dominion Theatre on March 29th, 1983 in London, United Kingdom. (Photo by Peter Still/Redferns)
56TH ANNUAL ACADEMY AWARDS - Airdate: April 9, 1984. (Photo by ABC Photo Archives/ABC via Getty Images) PRESENTERS SYLVESTER STALLONE AND DOLLY PARTON
Sandy Gallin, Dolly Parton, and Barry Diller during 'Back to the Future' Los Angeles Premiere at Samuel Goldwyn Theater in Beverly Hills, CA, United States. (Photo by Ron Galella/WireImage)
Singer Dolly Parton. (Photo by David Mcgough/DMI/The LIFE Picture Collection/Getty Images)
C/W singer Dolly Parton. (Photo by Robin Platzer/The LIFE Images Collection/Getty Images)
Dolly Parton on 'Dolly,' on 'Dolly,' in 1987. (Photo by Jerry Fitzgerald/ABC via Getty Images)
Dolly Parton on 'Dolly' in 1987. (Photo by Craig Sjodin/ABC via Getty Images)
Dolly Parton on 'Dolly' in 1987. (Photo by Bob D'Amico/ABC via Getty Images)
(L-R) Tom Petty and Dolly Parton on 'Dolly' in 1987. (Photo by Julie Fineman/ABC via Getty Images)
Dolly Parton in 1987. (Photo by ABC via Getty Images)
Dolly Parton in 1987. (Photo by ABC via Getty Images)
Dolly Parton in 1987. (Photo by John Seakwood/ABC via Getty Images)
DOLLY - Dolly Parton and Dwight Yoakam 1987 (Photo by Craig Sjodin/ABC via Getty Images)
UNITED STATES - JULY 01: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
Singer Dolly Parton performing. (Photo by Time Life Pictures/DMI/The LIFE Picture Collection/Getty Images)
Dolly Parton during 14th Annual People's Choice Awards at 20th Century Fox Studios in Los Angeles, California, United States. (Photo by Jim Smeal/WireImage)
PIGEON FORGE, TN - OCTOBER 24: American singer and songwriter Dolly Parton poses for a portrait at Dollywood on October 24, 1988 in Pigeon Forge, Tennessee. (Photo by Ron Davis/Getty Images)
Actress Shirley MacLaine and singer Dolly Parton attend the 'Steel Magnolias' New York City Premiere on November 5, 1989 at the Ziegfeld Theater in New York City. (Photo by The LIFE Picture Collection/Getty Images)
Dolly Parton during 'Steel Magnolias' New York City Benefit Premiere for the American Diabetes Association at Cineplex Odeon in Century City, California, United States. (Photo by Ron Galella/WireImage)
UNITED STATES - MARCH 09: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
UNITED STATES - MARCH 09: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
UNITED STATES - MARCH 09: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
UNITED STATES - MARCH 09: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
UNITED STATES - MARCH 09: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
UNITED STATES - MARCH 09: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
UNITED STATES - MARCH 09: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
UNITED STATES - MARCH 09: Dolly Parton (Photo by The LIFE Picture Collection/Getty Images)
Dolly Parton and Sandy Gallin during Sandy Gallin's 50th Brithday Party Hosted by Barry Diller at Eureka Restaurant in West Los Angeles, California, United States. (Photo by Jim Smeal/WireImage)
American musician Dolly Parton peforms on the Oprah Winfrey television show, Chicago, Illinois, May 2, 1991. (Photo by Paul Natkin/Getty Images)
Musician Dolly Parton attends the 'Shrining Through' New York City Premiere on January 27, 1992 at Ziegfeld Theater in New York City, New York. (Photo by Ron Galella, Ltd./WireImage)
Musician Dolly Parton on November 20, 1992 departing from the Los Angeles International Airport in Los Angeles, California. (Photo by Ron Galella, Ltd./WireImage)
Musician Dolly Parton and her hairdress on August 24, 1993 arriving at the Los Angeles International Airport in Los Angeles, California. (Photo by Ron Galella, Ltd./WireImage)
Dolly Parton during Dolly Parton at Las Vegas Airport - February 19, 1992 at Las Vegas Airport in Las Vegas, NV, United States. (Photo by Jim Smeal/WireImage)
Musician Dolly Parton attends the Opening Weekend Celebration of Dollywood on April 24, 1993 at Dollywood in Pigeon Forge, Tennessee. (Photo by Ron Galella, Ltd./WireImage)
American country musician Dolly Parton performs on the 'Oprah Winfrey Show', Chicago, Illinois, February 20, 1992. (Photo by Paul Natkin/Getty Images)
Musician Dolly Parton on February 4, 1993 arriving at the Los Angeles International Airport in Los Angeles, California. (Photo by Ron Galella, Ltd./WireImage)
TULSA, OK - JUNE, 1992: American singer and songwriter Dolly Parton poses in a brassiere contraption of two huge cones over her breasts as she portraits Madonna during a concert circa June, 1992 at the Brady Theater in Tulsa, Oklahoma. (Photo by Ron Davis/Getty Images)
Dolly Parton during 8th Season Grand Opening of Dollywood at Dollywood in Pigeon Forge, TN, United States. (Photo by Jim Smeal/WireImage)
Dolly Parton during 8th Season Grand Opening of Dollywood at Dollywood in Pigeon Forge, TN, United States. (Photo by Jim Smeal/WireImage)
THE TONIGHT SHOW WITH JAY LENO -- Episode 581 -- Pictured: Musical guest Dolly Parton enters on November 28, 1994 -- (Photo by: Margaret Norton/NBC/NBCU Photo Bank via Getty Images)
WEST HOLLYWOOD, CA - MARCH 27: American singer and songwriter Dolly Parton attends the Second Annual Vanity Fair Oscar Party on March 27, 1995 at Morton's Restaurant in West Hollywood, California. (Photo by Ron Davis/Getty Images)
PIGEON FORGE, TN - APRIL, 1995: American singer and songwriter Dolly Parton speaks during the 10th Anniversary of her Dollywood theme park circa April, 1995 in Pigeon Forge, Tennessee. (Photo by Ron Davis/Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 1709-- Pictured: (l-r) Musical guest Dolly Parton performs on November 2, 1999 (Photo by NBC/NBCU Photo Bank via Getty Images)
WASHINGTON, DC, UNITED STATES - 2000/03/23: Country singer Dolly Parton speaks during a luncheon address at the National Press Club in Washington DC, where she discussed 'Imagination Library,' her 5-year-old program that has given away 150,000 books to children. (Photo by Stephen J. Boitano/LightRocket via Getty Images)
382969 04: (ITALY OUT) Dolly Parton leaves a midtown hotel with a companion on their way to a limousine December 6, 2000 in New York City. (Photo by Arnaldo Magnani/Liaison)
Musician Dolly Parton on April 7, 1989 at a Taping of 'Good Morning America' at ABC TV Studios in New York City, New York. (Photo by Ron Galella, Ltd./WireImage)
Musician Dolly Parton performing on 'The Today Show' Summer Concert Series on July 5, 2002 at Rockefeller Center in New York City, New York. (Photo by Ron Galella, Ltd./WireImage)
Singer Dolly Parton sings during a recording of Lifetime Television's 4th annual "Women Rock! Songs From the Movies" benefit concert at the Kodak Theatre in Hollywood September 30, 2003. The concert, which benefits breast cancer research, featured female musical artists singing songs from major motion pictures, and will be broadcast October 23 on the Lifetime television network in the United States. PP03100001 REUTERS/Fred Prouser FSP/thi
Country music star Dolly Parton performs during the 37th annual Country Music Association Awards show, at the Grand Ole Opry House in Nashville, Tennessee, November 5, 2003. REUTERS/Tami Chappell PP03110022 JM
Oscar presenter Dolly Parton arrives on the red carpet at the 78th annual Academy Awards at the Kodak Theatre in Hollywood, California, March 5, 2006. Parton is wearing dress designed by Robert Behar. REUTERS/Mario Anzuoni
Actress and singer Dolly Parton poses at the special edition DVD release party celebrating the 25th anniversary of her film "9 to 5" in Hollywood March 30, 2006. The special edition DVD, which also stars Lily Tomlin, Jane Fonda and Dabney Coleman, will be released April 4. REUTERS/Fred Prouser
Singer and Kennedy Center Honoree Dolly Parton (L) arrives at the White House for the Kennedy Center Honors in Washington, December 3, 2006. REUTERS/Joshua Roberts (UNITED STATES)
Dolly Parton, composer and lyricist for "9 to 5: The Musical", poses at a news conference promoting the musical in Los Angeles September 18, 2008. The musical based on the hit 1975 film of the same name features songs by Parton and has its premiere September 20, 2008 in Los Angeles. REUTERS/Fred Prouser (UNITED STATES)
Dolly Parton poses as she arrives for the American Theatre Wing's 63rd annual Tony Awards ceremony in New York, June 7, 2009. REUTERS/Lucas Jackson (UNITED STATES ENTERTAINMENT)
Singer Dolly Parton arrives at the 51st Academy of Country Music Awards in Las Vegas, Nevada April 3, 2016. REUTERS/Steve Marcus
Dolly Parton sings a duet with Katy Perry after Parton accepted the Tex Ritter Award during the 51st Academy of Country Music Awards in Las Vegas, Nevada April 3, 2016. REUTERS/Mario Anzuoni
Singer Dolly Parton poses backstage with her Willie Nelson Lifetime Achievement Award during the 50th Annual Country Music Association Awards in Nashville, Tennessee, U.S., November 2, 2016. REUTERS/Jamie Gilliam
NASHVILLE, TN - NOVEMBER 03: Dolly Parton speaks during a press conference for the DVD release of Dolly Parton's 'Christmas Of Many Colors: Circle Of Love' on November 3, 2016 in Nashville, Tennessee. (Photo by Terry Wyatt/WireImage)
LOS ANGELES, CA - JANUARY 29: Singer/actor Dolly Parton speaks onstage during The 23rd Annual Screen Actors Guild Awards at The Shrine Auditorium on January 29, 2017 in Los Angeles, California. 26592_014 (Photo by Kevin Winter/Getty Images )
WEST HOLLYWOOD, CA - SEPTEMBER 15: Singer Dolly Parton attends Variety and Women In Film's 2017 pre-Emmy celebration at Gracias Madre on September 15, 2017 in West Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
NEW YORK, NY - FEBRUARY 28: Dolly Parton seen on the streets of Manhattan on February 28, 2018 in New York City. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
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