Sexy probably means different things to different people.
If you mean "do you fancy them"...
Ola, actually, probably not. I posted on another thread that, although I'm sure she's a very nice person, I couldn't understand what James sees in her, though he presumably does. The problem with Ola, for me, is that shes has this "doll-like" image, and also a problem about communicating fluently, from what we've seen of her on ITT. She's curvy, but you really need quite a bit more than that.
Kristina is very interesting. Attractive. She's also a brilliant dancer, which actually counts for something - that threesome she did with Brian and Hayley gave an impression of both physical athleticism and also a sort of fiesty attitude. But are those boobs real? - possibly not, which could be an issue. Kristina also has this motherly touch, shown so well with John, so she's the combination of hot Ferrari and mother figure all in one. She gets loads of marks for all that.
Lisa Snowdon has significant legs. Again, not convinced about those boobs. She seems a very assured sort of person, at least from what I've seen of her presenting Next Top Model. But I'm not sure how superficial she might be. She does give a slight impression of being not terribly discerning. But I don't know her. (If she PM's me maybe we can get together and find out, and I'll report back).
Cherie. Hadn't actually noticed her until this weekend. That rhumba was pretty good. She's ex Royal Shakespeare Company. Women who've acted Shakespeare often seem to be able to summon up a certain air which is interesting. Also played Guinevere in Excalibur (with Helen Mirren).