Nope. See how just above her pelvis her stomach caves in? She would have to remove a rib and some of her lower intestine to look like that.
It only looks like her stomach is caving in because her shirt covers the other side of her body and because of the way she's turning. You can do the same thing she's doing by leaning on your left leg and shoving your hips out towards the right. The curve around her pelvic area may look a bit too prominent and curvy, but that can be attributed to the way she's twisting her torso (the back of the pelvic bone goes up at an angle), and is by no means grounds for the bad_anatomy tag.
You should try harder with copying poses and feeling yourself up before you resort to that tag next time.