Chris and Liam Hemsworth are engaged in an epic Instagram war (and it's pretty adorable)
Liam Hemsworth, left, and Chris Hemsworth arrive at the U.S. premiere of "Thor: The Dark World" at the El Capitan Theatre on Monday, Nov. 4, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)
Liam Hemsworth, Luke Hemsworth and Chris Hemsworth attend the 2014 Vanity Fair Oscar Party on Sunday, March 2, 2014, in West Hollywood, Calif. (Photo by Evan Agostini/Invision/AP)
Actor Chris Hemsworth, right, and actor Liam Hemsworth arrive at the premiere of the feature film "Thor" in Los Angeles on Monday, May 2, 2011. (AP Photo/Dan Steinberg)
Actors Liam Hemsworth (L) and Chris Hemsworth arrive for the premiere of Warner Bros' 'Vacation' at the Regency Village Theatre in Los Angeles on July 27, 2015. AFP PHOTO/ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
CULVER CITY, CA - APRIL 20: (L-R) Actors Liam Hemsworth, Chris Hemsworth and Luke Hemsworth attend City Year Los Angeles' spring break: destination education at Sony Pictures Studios on April 20, 2013 in Culver City, California. (Photo by Chelsea Lauren/Getty Images for City Year Los Angeles)
WEST HOLLYWOOD, CA - FEBRUARY 27: (EXCLUSIVE ACCESS SPECIAL RATES APPLY; NO NORTH AMERICAN ON-AIR BROADCAST UNTIL MARCH 3, 2011) Actors Liam Hemsworth and Chris Hemsworth attend the 2011 Vanity Fair Oscar Party Hosted by Graydon Carter at the Sunset Tower Hotel on February 27, 2011 in West Hollywood, California. (Photo by Jeff Vespa/VF11/WireImage)
Actors Liam Hemsworth and Chris Hemsworth check out the new Samsung Galaxy Tab at the Samsung Galaxy Tab Lift on January 22, 2011 in Park City, Utah.
Actor Liam Hemsworth and actor Chris Hemsworth arrive at The Weinstein Company and Realativity Media's 2011 Golden Globes after party held at Bar 210 inside The Beverly Hilton hotel on January 16, 2011 in Beverly Hills, California. (Photo by Barry King/FilmMagic)
(EXCLUSIVE COVERAGE) Actors Chris Hemsworth (L) and Liam Hemsworth celebrate Liam Hemsworth's Birthday Party at Cleo at the Redbury Hotel on January 14, 2011 in Los Angeles, California. ***Exclusive*** (Photo by Michael Kovac/WireImage)
Comic-Con -- Pictured: (l-r) Chris Hemsworth, Liam Hemsworth arrive at the Syfy party at the 2010 Comic-Con in San Diego, Ca. (Photo by Evans Vestal Ward/NBC/NBCU Photo Bank via Getty Images)
BEVERLY HILLS, CA - MAY 13: Actors Liam Hemsworth and Chris Hemsworth, recipient of AIF Breakthrough Award, pose during Australians In Film's 2010 Breakthrough Awards held at Thompson Beverly Hills on May 13, 2010 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)
HOLLYWOOD - MARCH 25: Liam Hemsworth and Chris Hemsworth attends the 'The Last Song' Los Angeles Premiere at ArcLight Hollywood on March 25, 2010 in Hollywood, California. (Photo by Lester Cohen/WireImage)
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Sexiest Man Alive Chris Hemsworth and younger bro Liam Hemsworth (who is also one of the sexiest men alive, in our humble opinion) are currently engaged in a social media battle. It started six weeks ago, when Liam posted a picture of his dog and her new "favorite chew toy."