I'm in ireland & have a 17 year old..
The teens I see wear v short North Face puffa jackets to the waist, worn with tracksuit bottoms (worn low on the hips often with a gap between jacket & bottoms brrrrr) or baggy pale wash denim with rips or black leggings. Mostly worn with trainers sometimes clumpy or still lots of converse high tops too.
My dd wears cropped tops, short pleated skirts, sheer black tights & black patent dm shoes with a black short north face puffa jacket
Or she swaps the skirt & tights for tracksuit bottoms with crop top or baggy hoody & wears either white or black canvas converse high tops
I've also noticed a big shift in the make up in her group from the HUGE eyelashes to far more subtle fake lashes & generally a more 'natural ' look (which still takes a really long time to perfect!)
My dd is v slim & petit but not all of her friends are & the biggest difference I see from when I was a teen is they all wear the same stiff irrespective of body shape / weight. So it's cropped tops galore & it doesn't seem to deter them if they're overweight.
And I know its unpopular to say it but looking around the city we live in & at the secondary school every morning SO many young people (male & female) are overweight these days. It's mostly the girls but only by a small margin. It really was not like that when I was a teen in the 80s.
In the older then teens age ranges we see LOTS of those weird long sleevless puffa jackets down to the ankles worn over sports gear. Usually with hair severely scraped back off the face & a full face if makeup & long long nails. This is a trend in what seems to be 30 -40+ year olds
We're a University city & the students seem very boringly dressed compared to past times. Lots of plain coloured sweatshirts with mom jeans & clumpy 'dad' trainers. I feel sorry for them, though they door look practical & comfortable it has to be said. There's just so little flair! Or individuality mostly.
Lots of grey joggers & black puffa jackets on men of all ages - its like a sad uniform