The age old dilemma: what do girls look best in? They can look great in both of course.
Let's put it this way: While standing or walking, you can't beat the short tight skirt for attention getting.
For sitting or bending over, then the jeans are better; you don't have to worry about them ridin gup or guys looking at your underwear. And jeans show off a fit, muscular body better than the dress does. Almost anygirl looks good in the dress, but you have to WORK to look good in tight jeans.
I like tight jeans better, they help to show off a little butt... but also don't seem as slutty as skirts to me. Tight skirts make me think her thought when choosing to wear them was to make guys think "That would come off so easily". Not the kind of girl I'm into.
Who gives a f*ck! I mean that in an endearing way, QA :) Seriously, most guys are not worth impressing so dress how you want to! If you feel laid back and chill, throw on a pair of jeans and a comfy top. If you're feeling flirty and feminine, throw on a dress. Wear what you want to wear because YOU want to wear it, not because some guy prefers it when that guy may not even be worth trying to meet his preferences. A lot of them really aren't! I used to think like "What do guys like to see? What turns them on?" then when a bunch of guys started showing interest in me, I learned that a lot of guys these days kinda just suck and all that effort and energy that goes into pleasing them is a waste because most of them won't deserve it. So just be yourself and dress how you want to dress :)