Okay well I wore a similar outfit today and have long blond hair, etc...I felt so uncomfortable because I felt like so many guys kept staring at me(my legs) like I was dressed sluttly. I just felt extremely self conscious. Maybe it was just my imagination.
Her "revealing" clothing would suggest (to me) that she was confident and would probably be happy to find herself the subject of respectful attention.
I would definitely think positively of her.
I'd add that, in some situations, this may be a difficult look in the sense that it is also going to attract some less respectful attention. It bums me out that guys are disrespectful because it makes cute girls less inclined to show off a little! Please don't be discouraged or feel self conscious--I bet you looked great. Here's the most respectful and gentle "whistle" I can blow! ;-)
Sure I'd notice, especially with long blond hair...but I'd say to myself, 'There goes trouble in a short, tight skirt.' Clearly you, or any woman, would be asking for attention, in fact begging for it, so really, complaining about guys' staring is a little silly.
I would notice her. I would not think she looked trashy, that is pretty normal for where I live, although the skirt could be a little longer. I don't think she is wearing very "revealing" clothing so I would not think she is asking for attention.
Overall, I just don't really like the outfit. The plain white top doesn't work for me. Neither do v-necks on girls in general, unless they are snug fit.