Carly Sosnowski called out her sister on Twitter for posting an Instagram photo that made it look like she was on a hike.

Casey Sosnowski had actually taken the photo in their backyard.

Casey told INSIDER she's "a pretty chill person overall" so she wasn't angry when her sister shared the tweet, which has been liked more than 250,000 times.

"It just goes to show that not everyone's life is as perfect as it seems on Instagram," she added.

Visit INSIDER's homepage for more stories.

It's no secret that Instagram is rarely an accurate reflection of reality.

Whether it's a toxic dump disguised as a stunning blue lake or an optical illusion of a couple hanging out of a moving train, it's not difficult to fake a glamorous or extreme photo on the platform.

One Instagram user recently got called out for doing just that — by none other than her own sister.

On Saturday, Carly Sosnowski tweeted: "My sister said she was going hiking.....this is our backyard."

The tweet, which has since been liked more than 250,000 times, shows two photos. The one on the left is a behind-the-scenes shot taken by Carly, while the one on the right is what appeared on Casey Sosnowski's Instagram page.

Casey posted the photo with the caption "Nature is the ultimate healer to all our problems."

Nature is the ultimate healer to all our problems🌿#naturelovers A post shared by 𝐂𝐚𝐬𝐞𝐲 𝐒𝐨𝐬𝐧𝐨𝐰𝐬𝐤𝐢 (@caseyrsos) on Aug 3, 2019 at 4:44pm PDT Aug 3, 2019 at 4:44pm PDT

In the picture, she's wearing a visor and leggings and carrying a water bottle — even though she's in her own backyard.

Casey told INSIDER: "I told my little sister let's go outside and take pictures by our wooded area because I haven't posted on Instagram since the beginning of July, so I figured it was about time I posted something.

"I thought the background was really pretty, so we took pictures over there, and after I got home and posted it I told my family, 'Look, it looks like I was going for a hike.' So then my sister Carly posted it."

Read more: A 24-year-old man asked Twitter to help him edit his ex out of a Grand Canyon photo, and thousands of people got creative

She added: "I thought it was funny. I'm a pretty chill person overall so it didn't bother me, and then it blew up and I was like 'whoa.'"

One Twitter user was quick to notice that she appeared to be wearing two different shirts in the photos.

—sam is desperate for minecraft java friends (@SATANLOVESMILKK) August 5, 2019

Another responded by saying the white shirt could be seen around the photographer's neck.

Casey replied to Carly's tweet with "I feel personally attacked," after which the sisters jokingly bickered.

"It just goes to show that not everyone's life is as perfect as it seems on Instagram," Casey told INSIDER.