If I was attracted to him. It would be he's birthday suit. If it were some ordinary guy. I couldn't give a rats ass what they wear! Just remember cleanness is next to godliness . So look fresh and clean regardless. Oh and don't wear sweats unless your at the gym!
Formal suits are pretty self explanatory - they really make a man look like a MAN!
Leather jackets, even ones that don't necessarily fit to a T, have a tendency to give the same MAN! feeling when I see them on worn. The give a lot of class where you wouldn't think there would be class. :)
A nice FITTED suit. Because of the mysterious way it has; let's you think what's under there. Yes enfasis on the fitted because any clothing that is baggy is just horrible. And a button down shirt with sleves up to the elbows.
As for stuff I find sexy on a girl when she's out in public? I like the "sporty" look. Maybe a T shirt that just barely covers the belly button. It generally only works for really fit girls, though.
I once saw a girl "friend" in a black dress at the beach. WOW. Maybe classic styles. I kind of dig the "'40's starlet" look. Oddly enough, that can be very attractive and very sexy. It's not always the nighties or what you'd think. Sometimes it's just a really good look that works.
I was at dinner one night, trying to get a look at this woman with the great hairstyle. This mysterious woman with the amazing hair finally turns around, and I see it's someone I've known for months. She normally just has it in a casual style. Some days, it's looked "brittle." That night, she looked incredible. Honestly, I was shocked. I was speechless, which is rare, though I did compliment her on it, and told her how amazing she looked. AND SHE'S NEVER DONE IT AGAIN. Ugh.