"Thirteen years as best friends, soulmates, partners and then parents," Hammer began his caption. "It has been an incredible journey, but together, we’ve decided to turn the page and move on from our marriage."
The photo shows the couple in their early years, looking entwined and blissfully in love seated next to each other in a car.
"As we enter into this next chapter, our children and relationship as co-parents and dear friends will remain our priority," Hammer stated.
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Armie Hammer and wife Elizabeth Chambers Hammer together
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Armie Hammer and wife Elizabeth Chambers Hammer together
LOS ANGELES, CA - JANUARY 07: Armie Hammer and Elizabeth Chambers arrive at the Gold Meets Golden event held at Equinox on January 7, 2017 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
LOS ANGELES, CA - DECEMBER 08: Actors Elizabeth Chambers and Armie Hammer attend the 2016 GQ Men of the Year Party at Chateau Marmont on December 8, 2016 in Los Angeles, California. (Photo by Jesse Grant/Getty Images)
WESTWOOD, CA - NOVEMBER 11: Actor Armie Hammer and wife Elizabeth Chambers arrive at the screening of Focus Features' 'Nocturnal Animals' at Hammer Museum on November 11, 2016 in Westwood, California. (Photo by Jon Kopaloff/FilmMagic)
Actors Elizabeth Chambers (L) and Armie Hammer attend the 8th Annual Governors Awards hosted by the Academy of Motion Picture Arts and Sciences on November 12, 2016, at the Hollywood & Highland Center in Hollywood, California.
The Academy's Board of Governors is presenting Honorary Oscar Awards to actor Jackie Chan, film editor Anne Coates, casting director Lynn Stalmaster and documentary filmaker Frederick Wiseman. / AFP / Valerie Macon (Photo credit should read VALERIE MACON/AFP/Getty Images)
WEST HOLLYWOOD, CA - NOVEMBER 10: Armie Hammer, Elizabeth Chambers arrives at the Hollywood Foreign Press Association And InStyle Celebrate The 2017 Golden Globe Award Season at Catch LA on November 10, 2016 in West Hollywood, California. (Photo by Steve Granitz/WireImage)
LONDON, ENGLAND - OCTOBER 16: Armie Hammer and Elizabeth Chambers attend the 'Free Fire' Closing Night Gala during the 60th BFI London Film Festival at Odeon Leicester Square on October 16, 2016 in London, England. (Photo by Danny Martindale/WireImage)
LONDON, ENGLAND - OCTOBER 14: Armie Hammer and Elizabeth Chambers attend the 'Noctournal Animals' Headline Gala screening during the 60th BFI London Film Festival at Odeon Leicester Square on October 14, 2016 in London, England. (Photo by Fred Duval/FilmMagic)
HOLLYWOOD, CA - SEPTEMBER 22: Actor Armie Hammer (R) and wife Elizabeth Chambers attend the premiere of 'The Birth of a Nation' at ArcLight Cinemas Cinerama Dome on September 21, 2016 in Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
TORONTO, ON - SEPTEMBER 11: Armie Hammer and Elizabeth Chambers attend the 'Nocturnal Animals' Red Carpet Premiere for the 2016 Toronto International Film Festival Premiere at the Princess of Wales Theatre on September 10, 2016 in Toronto, Canada. (Photo by Walter McBride/FilmMagic)
TORONTO, ON - SEPTEMBER 10: Actor Armie Hammer (L) and Elizabeth Chambers attend the Hollywood Foreign Press Association and InStyle's annual celebration of the Toronto International Film Festival at Windsor Arms Hotel on September 10, 2016 in Toronto, Canada. (Photo by Todd Williamson/Getty Images for InStyle )
TORONTO, ON - SEPTEMBER 08: Elizabeth Chambers and Armie Hammer attend the world premiere of 'Free Fire' during the 2016 Toronto International Film Festival at Ryerson Theatre on September 7, 2016 in Toronto, Canada. (Photo by Taylor Hill/FilmMagic)
PARK CITY, UT - JANUARY 25: Actors Elizabeth Chambers (L) and Armie Hammer attend the 'The Birth Of A Nation' Premiere during the 2016 Sundance Film Festival at Eccles Center Theatre on January 25, 2016 in Park City, Utah. (Photo by George Pimentel/Getty Images for Sundance Film Festival)
LOS ANGELES, CA - AUGUST 11: Armie Hammer and Elizabeth Chambers arrive at the Sundance Institute 'NIGHT BEFORE NEXT' held at The Theatre At The Ace Hotel on August 11, 2016 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
WESTWOOD, CA - OCTOBER 10: Armie Hammer and Elizabeth Chambers attend Hammer Museum's 'Gala in the Garden' Sponsored by Bottega Veneta at Hammer Museum on October 10, 2015 in Westwood, California. (Photo by Stefanie Keenan/Getty Images for Hammer Museum)
WESTWOOD, CA - OCTOBER 10: Actors Elizabeth Chambers (L) and Armie Hammer, both wearing Bottega Veneta, attend the Hammer Museum Gala in Garden sponsored by Bottega Veneta at Hammer Museum on October 10, 2015 in Westwood, California. (Photo by Donato Sardella/Getty Images for Hammer Museum)
WOODLAND HILLS, CA - OCTOBER 03: (L-R) Actors Elizabeth Chambers and Armie Hammer attend Feed Supper with Lauren Bush Lauren X Nathan Turner at The Westfield on October 3, 2015 in Woodland Hills, California. (Photo by John Sciulli/Getty Images for Nathan Turner)
BEVERLY HILLS, CA - SEPTEMBER 9: Elizabeth Chambers and Armie Hammer attend the Salvatore Ferragamo 100th Year Celebration in Hollywood and Rodeo Drive Flagship Store Opening on September 9, 2015 in Beverly Hills, California. (Photo by Amy Graves/WireImage)
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Elizabeth Chambers posted the same photo alongside the same caption to her own Instagram account minutes after her husband went live with the news.
“I think you always have to do — not what’s easiest — but what’s best. I definitely challenge myself more than my husband would like, in terms of that," Chambers told AOL in a 2017 interview.
The pair tied the knot in 2010 and recently celebrated their 10-year anniversary.
"I’m beyond grateful for you, this decade, our family and the dreamiest Friday night anniversary sunset," Chambers captioned the romantic Instagram post.
The two had recently been quarantining in the Cayman Islands.
“When we finally got together, Armie really wanted to get married,” Chambers told Town & Country about their relationship back in 2013. “He sat me down and said, ‘Look, we don’t have to do this. We could just go our own ways, and then one day you’ll be 40 and divorced and we’ll run into each other, and we’ll laugh and go out to dinner and have this same connection, and we’ll wonder why we wasted all of that time. Or we could just do it now and enjoy the ride.'"
The pair shares two children together, Harper Grace Hammer, 5, and Ford Armand Douglas Hammer, 3.
They are "asking for privacy, compassion and love during this time."
