depends on the guy
however, note that it will also depend on what suits her more, in terms of looks and personality. If she looks and acts young (do not confuse this with immaturity), she could pull of the cute look. The typical types of guys who would be interested are those who look for innocence and like the sweet, young, girl next door (I think)
If she looks and acts mature and sophisticated, go with the sophisticated look. This is my favourite look and it shows a much more accomplished woman with a sense of style. Unfortunately, I am one of those people who is in the minority so I don't know what sort of guys like this look.
Hope this helps