It seems that Hollywood must be bored with telling us all the things about our external appearance that we need to fix, because they've now started to focus on things that you can't see. First we needed to get botox, and fillers, and hair extensions and liposuction, and tummy tucks, and breast implants etc etc etc so we can all pretend that we don't age and look as perfect as our favourite celebrities, but now it seems that the attention has shifted a little south. Like, to our …