masta when you say sexy do you mean 'sexually attractive' (dictionary) and 'having sexual appeal; suggestive of sex' (wiktionary)?
More of the latter but I don't see a huge difference between both. I think sexy when I see a girl with a good looking ass and breasts, often somehow exposed by tight jeans, short skirts and such other sexually tempting clothes.
Yeah I think that would be a good definition.
Now a fit girl is just an average one - simply not too fat and not too skinny, with normal average body. Just like most average girls - that's how Alizee's body looks to me. Something I see everyday and doesn't seem especially "sexy". That's how most of my female friends look like etc.
It doesn't mean that I wouldn't find her sexually attractive if I were in bed with her. But she's not standing out with sexual appeal - It wouldn't make me admire her body like I would with a really outstandingly sexually appealing girl.
To me Alizee looks just normal, average and her face is what is truly outstanding in my opinion. It's what makes me really like her looks.
edit: I think I get the point now - it's either my english or a different culture/point of view but I think that some people here consider a person "sexy" whenever she's not totally asexual.
And to me that definition worked for girls that would be kind of outstanding - those that I would turn around to see their asses etc. Not just any fit girl that I would find sexually attractive in an intimate situation. Because usually fit girls are also sexually attractive like that but that's how any next girl is, unless she's too fat, too skinny or her ass looks weird but that's pretty rare.