Are youth (age 20ish) wearing baggy clothes, or are they more into "tighter" clothes
I think that just like anywhere you'll find some kids in hip hop gear. I don't think baggy clothes are AS popular in PL though. I've seen more people in tighter cliothes rather than baggy. But, it would also depend on what you're wearing. Some clothes are made to be a little loose. Honestly, I wouldn't sweat it.
If you happen to make it to the beach, be aware that most men wear bikini briefs or tight boy shorts. I was wearing surfer shorts and stood out like a sore thumb, but you wont get a boykini on me :)