The level of
stunning a person is when dressed up, usually based on positive contrast to daily appearance. A very good looking woman who dresses very nicely every day can have a low wow factor as there is no great contrast between how she looks for a special occasion and on a daily basis. A girl who normally dresses in a boyish or sloppy manner however
will, when groomed, usually have a
high wow factor because of the contrast to how she usually looks
The wow factor is often at play in teen movies where makeovers are involved.