"It looks so simple and beautiful, but powerful," Graham told People.
"I've got more weight on me. I've got stretch marks, and in the beginning I really had to have a lot of conversations with myself and tell myself, 'Okay, new body, new mindset.'
"But after this photo shoot, I felt so empowered because I was like, 'Yes. I look good. I feel good. This is my new mom bod'."
This isn't the first time that Graham has shared photos of her post-baby body with a positive message.
In February, shortly after her son's birth, she shared an intimate photo of her stretch marks with the caption: "Same me, few new stories".