Margot Robbie looks nearly unrecognizable as Tonya Harding on 'I, Tonya' set -- see the pic


Margot Robbie is physically transforming for her role as former Olympic ice skater, Tonya Harding.

The 26-year-old actress is portraying Harding in the biopic, I, Tonya, and was spotted on set in Atlanta, Georgia, wearing high-waisted jeans, a blue sweater and maroon ballet flats. "[Margot was filming] a flash forward scene where she is being interviewed about the event of the famous attack on Nancy Kerrigan," an eyewitness told ET. "Margot had visible padding on most of her body and was wearing a wig. She had a perm wig on that she wore all day."

WATCH: Nancy Kerrigan Gets Back on the Ice With ET

The eyewitness says Robbie was "very positive and smiling" while on set and "arrived to the production office at noon and filmed until around 5:30 p.m." on Friday.

I, Tonya follows Harding's life and her involvement in one of the biggest scandals in the history of American sports. Harding's career came to an end after she conspired with her ex-husband and bodyguard to break fellow American skater Nancy Kerrigan's legs ahead of the 1994 Winter Olympics. Kerrigan was clubbed in the knee but recovered seven weeks later, and ended up taking home the silver medal at the Olympics.

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Margot Robbie through the years
NEW YORK, NY - MAY 02: Margot Robbie is seen goint to Met Gala on May 2, 2016 in New York City. (Photo by Team GT/GC Images)
NEW YORK, NY - MAY 02: Margot Robbie arrives for 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 Karwai Tang/WireImage)
LAS VEGAS, NEVADA - APRIL 12: Actress Margot Robbie attends Warner Bros. Pictures' 'The Big Picture,' an exclusive presentation highlighting the summer of 2016 and beyond at The Colosseum at Caesars Palace during CinemaCon, the official convention of the National Association of Theatre Owners, on April 12, 2016 in Las Vegas, Nevada. (Photo by C Flanigan/Getty Images)
LAS VEGAS, NEVADA - APRIL 12: Christoph Waltz, Samuel L. Jackson, Margot Robbie and Alexander Skarsgard attend the CinemaCon 2016 - Warner Bros. Pictures 'The Big Picture,' An Exclusive Presentation Highlighting The Summer Of 2016 And Beyond held at The Colosseum at Caesars Palace on April 12, 2016 in Las Vegas, Nevada. (Photo by C Flanigan/Getty Images)
BURBANK, CALIFORNIA - APRIL 09: (EXCLUSIVE ACCESS, SPECIAL RATES APPLY) Actors Will Smith (L) and Margot Robbie attend the 2016 MTV Movie Awards at Warner Bros. Studios on April 9, 2016 in Burbank, California. MTV Movie Awards airs April 10, 2016 at 8pm ET/PT. (Photo by Jeff Kravitz/FilmMagic for MTV)
NEW YORK, NY - MARCH 01: Actress Margot Robbie attends the 'Whiskey Tango Foxtrot' world premiere - Arrivals at AMC Loews Lincoln Square 13 theater on March 1, 2016 in New York City. (Photo by Dimitrios Kambouris/Getty Images)
NEW YORK, NEW YORK - MARCH 01: Margot Robbie attends the 'Whiskey Tango Foxtrot' world premiere at AMC Loews Lincoln Square 13 theater on March 1, 2016 in New York City. (Photo by D Dipasupil/FilmMagic)
HOLLYWOOD, CA - FEBRUARY 28: Actress Margot Robbie poses in the press room during the 88th Annual Academy Awards at Loews Hollywood Hotel on February 28, 2016 in Hollywood, California. (Photo by C Flanigan/FilmMagic)
HOLLYWOOD, CA - FEBRUARY 28: Actress Margot Robbie attends the 88th Annual Academy Awards at Hollywood & Highland Center on February 28, 2016 in Hollywood, California.(Photo by Jeffrey Mayer/WireImage)
NEW YORK, NY - FEBRUARY 18: Actress Margot Robbie attends the Calvin Klein Collection Fall 2016 fashion show during New York Fashion Week at Spring Studios on February 18, 2016 in New York City. (Photo by Michael Loccisano/Getty Images)
NEW YORK, NY - SEPTEMBER 11: Margot Robbie is Seen Around Spring 2016 New York Fashion Week shows on September 11, 2015 in New York City. (Photo by John Parra/Getty Images)
ABU DHABI, UNITED ARAB EMIRATES - NOVEMBER 06: Margot Robbie attends British Airways celebration of the launch of its new Boing 787-9 Dreamliner on its daily London-Abu Dhabi-Muscat service. British Airways hosts a secret island party with Australian actress Margot Robbie, Hollywood star Orlando Bloom and a surprise live performance from chart star and judge of TV's The Voice, Jessie J. at Zaya Nurai Island on November 6, 2015 in Abu Dhabi, United Arab Emirates. (Photo by Wouter Kingma/Getty Images for British Airways)
NEW YORK, NY - SEPTEMBER 11: Actress Margot Robbie attends the annual Charity Day hosted by Cantor Fitzgerald and BGC at Cantor Fitzgerald on September 11, 2015 in New York City. (Photo by Noam Galai/Getty Images for Cantor Fitzgerald)
HOLLYWOOD, CA - FEBRUARY 24: Actress Margot Robbie attends the Warner Bros. Pictures' 'Focus' premiere at TCL Chinese Theatre on February 24, 2015 in Hollywood, California.(Photo by Jeffrey Mayer/WireImage)
NEW YORK, NY - FEBRUARY 26: Margot Robbie attends the Arizona Coyotes vs New York Rangers game at Madison Square Garden on February 26, 2015 in New York City. (Photo by James Devaney/GC Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0219 -- Pictured: (l-r) Actress Margot Robbie plays Beer Pong with host Jimmy Fallon on February 26, 2015 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
HOLLYWOOD, CA - FEBRUARY 24: Actress Margot Robbie arrives at the Los Angeles World Premiere of Warner Bros. Pictures 'Focus' at TCL Chinese Theatre on February 24, 2015 in Hollywood, California. (Photo by Gregg DeGuire/WireImage)
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Harding finished in eighth place and later plead guilty to conspiring to hinder prosecution in the attack. She was banned from the U.S. Figure Skating Association for life. The incident is still known as "The Whack Heard Round the World."

MORE: 2016 Rio Olympics -- The 9 Biggest and Most Scandalous Moments

"That's the one thing that's truly missing in my heart," she told ET in 2014 of her lifetime ban. "I wasn't able to go out and do the shows and skate for the people that wanted to see me skate."

Reporting by Kaley Stumpe.

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