It ain't - Emma Watson, for instance, is welcome to let me take her out for a drink anytime - but all other things being equal, I'd rather drool over a 22-24y.o. than 16-18y.o.However, I still don't understand Gaith's premise that casting a 16-to-18-year-old actress is in any way incompatible with casting a sexy or well-developed actress.

No, I was talking about an English (not American playing English, hem) university friend, early 20s. Good grief: are you suggesting that Rhona Mitra doesn't have model looks?Are you talking about Rhona Mitra?

This point has been brought up and addressed earlier in the thread. Which part of that discussion did you not grok?Supergirl shouldn't have boobs YET. What part of "girl" escapes the collective "yous" vision on this subject?
Besides, I'm not sure if you're aware of this, but women are routinely called "girl" well into their 30s, sometimes even later. When we say "girlfriend", we don't necessarily mean "teenage female partner". Same thing.
I don't give a fig about that movie.Hells bells, could you imagine how pointless hitgirl in Kick ass would have been if she was 18 with boobs the size of breadboxes?