I think a nice fitting pair of jeans can be sexy. But I think that about other things too. Maybe the thing is you came from a time when women just didn't wear jeans that much and you are a little set in your ways. AS for what to wear when hanging out it depends on what and where you are hanging out doing. When I go on a date and I have planned something out I would suggest that she might dress up or wear something casual so she would fit in where we are going.
hot jeans are fine, especially with ass kicking boots. but dresses are awesome! wearing pumps. a pencil skirt and a flirty top just sends us out in space some where.. gosh if you only knew you attraction level youd be floored
Jeans once in a while are OK. As for dressing up I'm not picky when it comes to that, I never was. But I don't think many guys here will argue about the slut wear lol, but even at that I'm conservative. I want to leave it up to my own imagination so it's not just a sex thing such babes looking hot or cute wearing boy shorts or Daisy Dukes, conservatively speaking and conservatively enough to leave it up to me and my imagination so it's what I want it to be.
Jeans are normal, but the girls who wear other things tend to catch my eye more easily. =)
Jeans are fine as long as it's casual. For a date, I like to see the girl in something that gives a good impression of her body. Not necessarily skin, but I like to see her body shape, so form fitting is ideal, especially if it shows off her curves in a tasteful, yet sexually appealing way.