Rotate and save objects rotation for further lookAt manipulation

Hello i made 3D model and want it to face camera.
I want my mesh to face camera like this

but got this result

this are my mesh rotation axises
1 ![2|543x499]

How can i rotate first on y axis 90 deg and save that rotation as my object initial orientation.
Or maybe i am getting it wrong.

ok Got it by myself.
You need to rotate geometry

head.geometry.rotateY(Math.PI / 2);
head.geometry.rotateZ(Math.PI / 2);