"So by now you have seen many a shot from #GQ and many people have said that we were photoshopped... OF COURSE WE WERE!," Bellisario, who plays Spencer Hastings on the show, wrote along with a collage of screen-grab images from the shoot.
"That's a very specific type of photo shoot. And looking very blown out and perfected was obviously what they were looking for," she continued. "Great. Cool. As long as we acknowledge how it was achieved so we know it's not real."
The 28-year-old actress went on to say that she was not mad at how the pictures turned out, adding that the same kind of retouching happens "everywhere."
"This industry seems to invest more in perfection than in flaw. But flaw and individuality, to me, are what make a human being interesting, they make our stories worth telling," she added. "Unfortunately the flaws don't usually sell products or magazines."
The actress wrapped up her message saying she was "proud" of all of her body including the parts that didn't make the cut in the GQ photos.
"My hips and thighs are a part of me," she wrote. "I get those things from my momma. And I'm happy To shake what my momma gave me."