I am a hairdresser, I am trained in different types of extensions too and I spotted it immediately, when the video was first released. Especially as we have a 75 inch TV it was glaring obvious, it's not to say she has lost her hair but she might just feel more confident with a wig on, there used by many people nowadays and to the untrained eye you couldn't tell. Reasons why I could - the parting, the hairline, the colour, the hair condition (looked like a double drawn wig and human hair which would, of course, be a very expensive wig). I said to my husband she's wearing a wig, he said no she's not, then I pointed out the reason why I knew, went back over a couple of older pics with regards to her hair line and parting and then he saw it too and agreed. You'd be shocked at the amount of people on TV who wear them, not because it's anything bad (I think they are fab and have come a long way in recent years) but because they look so real. I was devastated for Catherine and her family, cancer has blighted my own so I can empathise with what they are going through. I pray both her and Charles recover fully