Is this an acceptable gym outfit?

During a workout, the only thing on your mind should be completing it with flying colours.

What should not be on your mind? What you’re wearing or how you look to others.

Which is why Paris body-positive blogger Louise posted a seemingly ordinary side-by-side photo to Instagram featuring herself both in a long-sleeve workout top and a sports bra.

The most important part of the photo was the caption — underneath each image she wrote: “Acceptable Gym Outfit.”

Why was this important? Because Louise recently met a woman accused of “showing off her body” for wearing a sports bra while working out at her gym.

“As I was doing my deadlifts in the crossfit room today, a girl walked in,” she recalled.

“She started practicing her pull ups. Counting her, we were 2 women and 5 men in the room.

“I saw her getting really sweaty as time passed, but she was keeping her long-sleeve top on.”

So once they were both in the locker room, Louise asked the woman why she was wearing such covered-up clothing while the gym was so hot.

To which the woman hesitated and answered: “‘I do not feel comfortable wearing a sports bra at the gym since a guy told me I wanted to show off my body'”

“EXCUZEEEE ME. I was so pissed off,” Louise wrote.

RELATED: Fitness trainer has best response to body shamer
RELATED: Hottest celeb gym selfies

“I almost asked her which guy told her this so I could give him a little pep talk.

“So guys can train shirtless but women would not have the right to work out in a sports bra?”

“HELL YES YOU CAN GIRL.”

After all sports bras, Louise reminded us, were created for one purpose — working out in.

“Do not let anyone tell you how you should behave,” she added.

“So please, do not feel ashamed wearing it at the gym, especially when it is so warm.

“For your health, for you comfort, and even more simply, for yourself.”

Want more celebrity, entertainment and lifestyle news? Follow Be on Facebook,Twitter, Pinterest and Instagram.