I agree with bonestructure - looks mostly in-camera. This would be easy to do.

She's pale to begin with (look at her shoulder) and she has a pale makeup base on with vibrant lipstick, and bleached hair (which will often cast greenish-cyan shadows on itself, and the deeper it goes). Add to that some special attention with her mascara to alternate rows of black and pink to stick out.

A large soft source about 45 degrees  downangle from camera-right, and either a white board blasted with light behind her (to blow it ot), or we're looking at the the front of a large softbbox (there's a bit much spillover to seem to come from reflection - it might very well be the softbox).
That wouldn't need much postwork - just some CC and contrast adjustment to taste, but the rest is in-camera.

-Lew ;-)