Selena Gomez is taking issue with Elle magazine's most recent cover story that features an interview and photos with her.

The 26-year-old pop star is on the cover of the magazine's October issue. In the article, she talks about her work with A21, a global nonprofit against human trafficking, her return to "simplicity" and making new music.

PHOTO: Selena Gomez appears on the October cover of Elle magazine.
Mariano Vivanco for Elle Magazine
Selena Gomez appears on the October cover of Elle magazine.

But on the same day that the cover story was released, Gomez posted on her Instagram that she was "a bit bummed."

"Alright. Speaking from my heart for over an hour to someone who puts those thoughts into paid words can be hard for me. The older I get the more I want my voice to be mine," she wrote to her 140 million followers earlier today.

Without specifying what she took umbrage to, Gomez wrote, "I understand that reporters are working to grab the attention of a reader, however I will always work to ensure that what is public represents my truth."

"I’m a bit bummed but rarely surprised," she said.

Alright. Speaking from my heart for over an hour to someone who puts those thoughts into paid words can be hard for me. The older I get the more I want my voice to be mine. This is all apart of my work within an industry that’s been around longer than all of us have been. The purpose of my interview was three fold. My work with A21, my new collection with Coach, and some new music. As I’m aware there will always be interests in one’s personal life because that’s the pace of our ‘social’ generation. I’m grateful for my position and I will always find ways to make my job more about others and giving back— all while having the best time with my music, fashion, film and my love for learning about the world that I’m eager to tap into more and more. Church is a name for something far more personal. There’s always agenda seeking information on such a subject and I understand why. Rarely do I mention church (and I didn’t) but I’ll always feel comfortable talking about my values and beliefs. I respect that from everyone and anyone. I understand that reporters are working to grab the attention of a reader, however I will always work to ensure that what is public represents my truth. I’m a bit bummed but rarely surprised. Y’all know me and my heart. I can’t help it. So I’ll post some of MY photos from the collection and work with A21. My heart. And maybe edit my actual lyrics as you will all hear it soon ?? I love you guys to the moon and back. For more information on the work I do with A21 please, please visit link in my bio. So much more on that soon!

A post shared by Selena Gomez (@selenagomez) on Sep 4, 2018 at 9:05am PDT

Elle did not respond immediately to ABC News' request for comment.

In the story, the singer talked about interning for A21 five days a week and receiving both an email address and a key to the office.

"The idea of human trafficking to me is...I'm flabbergasted," she told Elle.

She discussed simplifying her life and feeling like "a totally different person" at age 26.

"Right now, I feel very sure of where I am. I don’t feel erratic or emotionally unstable. Or like I can’t handle my emotions, like I used to," she said. "It’s kind of understanding myself a little more. By all means I don’t have myself figured out. But it feels good."

PHOTO: Selena Gomez, left, and Demi Lovato attend the 3rd annual "InStyle Awards" at the Getty Center, Oct. 23, 2017, in Los Angeles.
Donato Sardella/Getty Images for InStyle
Selena Gomez, left, and Demi Lovato attend the 3rd annual "InStyle Awards" at the Getty Center, Oct. 23, 2017, in Los Angeles.

Gomez also mentioned her longtime friend Demi Lovato, before getting choked up.

"All I’m saying is, I reached out personally," she said about Lovato. "I didn’t do a public thing. I didn’t want to. I...I love her. I’ve known her since I was seven. So...it’s...that’s what I’ll say."