For my two pen'orwth.....
I love the idea of finding a wg who looks like X,Y or Z. However, for me it really needs to be someone who looks like someone I actually know, rather than a pornstar or celebrity. I need to find it believable, if that makes sense? One of my posts several years ago was in relation to an agency girl who just happened to be a ringer for the Mother of one of my kids at school who I had fancied for years. This was a far greater buzz for me than a Jennifer Anniston lookalike etc.
I accept the Lucy Verasamy thing as she is gorgeous. I don't know if I'm alone but I tend to try to look for look a likes of people that I actually know, although I also understand that this is very particular.