The difference between Aisleyne's VT and everyone else's is this. Aisleyne continued to act like a wigga for the first few weeks of her stay in BB. See
here for an example.
Then after her HND stay, she emerged with a brand new personality. So, the question remains... has Aisleyne been on a "journey" and realised the error or her ways? Or is she simply faking her "nice" personality for the sake of gaining votes?
Personally, I can't quite decide which it is...
