Matt Damon reveals what he really thinks about resemblance between him and fellow Hollywood actor

Matt Damon has revealed what he really thinks about the comparisons between him and another famous actor.

Damon, 54, has an uncanny resemblance to another Hollywood star, who was even cast in one of Damon's movies as his younger self.

Damon and his lookalike are one of a few celebrity doppelgängers. For example, Matthew McConaughey and Woody Harrelson look so alike, they're even considering taking a DNA test to see if they're actually brothers.

Meanwhile, Jessica Chastain and Bryce Dallas Howard, and Natalie Portman and Keira Knightley also have a strong resemblance.

Damon has revealed what he thinks about his resemblance to another actor (Bruce Glikas/WireImage)

Damon's doppleganger is, of course, Jesse Plemons - and once you see it, it's hard to un-see.

Plemons has previously commented on the resemblance he shares with Damon, admitting there are definitely 'worse things to be called'.

Speaking on The Today Show, he continued: “It’s definitely flattering. But yeah, throughout the course of my career, I’ve had various Matt Damon-associated nicknames and such."

Damon himself has now weighed in on the matter, and he's more than aware of the comparisons that have been made.

Damon's doppelganger is Jesse Plemons (Matt Winkelmeyer/WireImage)

In an interview with Access Hollywood for the release of his movie The Instigators, Damon was asked if he agrees with the comparisons.

He responded: "Sure, yeah, yeah, yeah, absolutely."

The actor pointed out that Plemons was even cast as a younger version of his character in the 2000 movie All the Pretty Horses, before his scene got cut.

Damon recalled how the crew was 'freaking out' when Plemons came to set to film, adding: "Five people came up to me before I met him and said, ‘You’re not gonna believe how much this kid looks like you'."

Even Damon himself was blown away by the resemblance when they finally met, so much so that the pair decided to take a picture together.

Plemons even played a younger Damon (Gary Gershoff/Getty Images)

“I couldn’t believe it. He looked more like me than I did when I was little," the actor said.

"Like my little 11-year-old face did not look like it [was going to become me]. He looked exactly like me. I was like, 'This is really weird'."

Casey Affleck, who stars alongside Damon in The Instigators, added that Plemons and Damon even speak similarly and have 'similar mannerisms'.

Describing Plemons as a 'great actor', Damon said he's 'proud of the comparison', though he noted no one has tried to cast them as brothers in more recent years.

Sharing his thoughts on why, Damon said: "I think he’s so much younger than me. He’s got to be 20 years younger than me, or almost that. But I would love to do something with him. I think he’s great.”