What are you people doing? It's art! Art I say! Jessica Rabbit's spine would snap in half if it had to support her torso in reality. It's a stylistic choice, stop ragging on the art. Besides, this is supposed to be a little walk-through like thing. It's cool to watch the process. Watch the process.
Compared to the dimensions of the rest of the body. If you compare them to her waist, their circumference would have to be at least 65-70 cm. That's size of my thighs and I'm a 110kg man who does squats with 150kg barbell, there's no chance a girl with a normal body would have thighs like that.
Personally I think that the top edge of the thighs shouldn't be so curved, it should be roughly where her knuckles are.