What would cause my sides to be so uneven after a tummy tuck with muscle repair? 8 weeks post op. (Photo)

In the photo I am standing straight; it just looks like I'm not because my sides are so uneven. I was at my regular doc for a normal appt and she checked me for scoliosis and there's nothing. My hips are straight, my spine is straight. But my sides in relation to my hips are so different. The one on the right is how it should look (more defined hip.) If I bind the upper abdomen very tightly in order to pull the left upper side in, I can make the two sides match, but it doesn't stay.