The thing with fashion trends, at least in America, is that they are bastardized soon after mass production. We all know the 80s has come back. It's evident with the latest trends that have come by lately.
Yes, leggings will be "in" this FALL, presumably when it's cold, but you know girls will walk around with them on regardless of the weather (think Uggs). I personally think leggings are cute depending on the girls stature and what she's wearing it with. I don't think the jean skirts + leggings is cute, especially when everyone and her mother is wearing it. But if you want to get into specifics about Fall trends, leggings will definitely be there, paired with a long top, such as a tunic. I haven't seen much in terms of skirts but...you never know.
I don't see trends as a big deal like I used to. If you do a little research, you'll find that some of them are really nice and classy. But like I said earlier, mass production ruins everything because everyone looks like clones. That's a problem.
But, I digress.
What ever happened to individuality? Oh yeah.
That was so last season.