As I was watching an episode of "Nigella Bites" the other night, I was totally struck by the appearance of Nigella. She had long stringy hair, parted in the middle, a not quite so beautiful complexion and nose that appeared much larger than what she has now in more recent shows. This particular episode was many years old, I presume. I wasn't even sure at the time it was her. I found this older photo of her and it is very much like what she looked like on the old program.
I'm thinking some polishing was done over the last few years. That being said I think she is a beautiful woman. I may even have a little girly crush on her. I think she exudes sensuality with that mix of domesticity that is charming and at the same time nonthreatening.
But that is just my opinion ;)