she really likes house-elves

I actually discovered this art a few years ago, and now I've decided to comment on this piece. While I ain't a true fan of HP in general, this is a piece that I sure love a lot. I also haven't read that book yet but I can tell from the others' reactions that this scene is captured perfectly. Nice! Harry's expression is quite funny, TBH, and the details like the dancing troll, a win win for a great artist like you.

Also, this may be kinda an awkward question, but... what is up with their jeans/pants? Can you explain why they look like that?