I'm new with TS3, so I don't know yet where to find TS3 clothes that fit better with the current trends than 2010 - 2015 styles. So far I found recent downloads here, Thesimscatalog, T$R, and I bookmarked 4t3 conversions on Tumblr

Examples of clothes I'm looking for:
* Leather jackets for TF
* Boxy crop tops for TF
* Other kinds of crop top meshes for TF - AF
* Nike sneakers
* Solid color athletic leggings
* Flared leggings
* Long blazers
* Oversized denim jackets

Other suggestions are welcome too

Have you started looking here?
https://xto3conversionsfinds.tumblr...ed/4to3clothing
It's a broad category though, here's a more specific catalog
https://xto3conversionsfinds.tumblr.com/cas

@aisquared thanks for the tip. I stumbled upon that page but I will take the time to check it out. But sadly not all the nice things are converted to TF as well

Yeah, most things are never converted for kids/teens in general.
One thing you can do in a pinch is to age-enable the YA/A CC either manually (recategorizing what CC you find in programs like TSRW, S3PE, CTU); or with NRAAS' Master Controller mod to enable all YA/A clothes for Teens. Either way, at worst, you might encounter neck seams/gaps, but I think a slider or something was made to fix that kind of stuff. I don't have much experience with teen sims though.

https://ctrlshiftc-simberly.tumblr.com/tagged/y2k