Im trying to do some poses for the millenium girl, but I cant do a realistic bending position. The hip seems to be the problem.

Is there a way to fix that hump on the back?

I don't have the millenium girl, but it looks like a joint paramiter issue to me. If this is just for your own use you could try moving the "Bend" center forwards in the Jount Editor. If that works you could impliment the JP change in in the pz2, you might also want to make a restore pose for the JPs.

that is true what les said. This is a fault in the poser mesh )any poser mesh) there just isn't enough groups to get a good bend. Maybe the next generation will have a few 'body groups' like paunch, lower back, mid back, upper back, chest etc...this would in theory solve that bend issue.

Can't do that by bending the abdomen or chest alone. Keep the Inverse Kinematics for both legs on (to keep the feet on the ground). Then bend the hip by useing the xRotate dial. Then "very slightly" bend the ab and chest. SWAMP

Note: You can do this without Inverse Kinematics turned on. You would just have to do more dial spinning to bend the butt and thigh back down. SWAMP

Thanks for your answers guys! SWAMP: Problem solved! Thank you very much!

Cool...have fun.

Sorry,but I just have to add this,as I have a pet-peeve about poses. ALL Poser figures have a "stick up their a$$" posture (no spinal curvature). Fix this when making your poses (bending over,upright,whatever),by bending the abdomen BACKWARD slightly,then bend the chest foward. Gives the spine a nice "S" curve. "S"WAMP