With the updated art, Rin's usual outfit of the red sweater and miniskirt looks really out of place.

I realize that after years of updated art for Kara no Kyoukai, Fate/Zero, and even Prisma Illya that FSN's art has ended up a little...simplistic. Rin and Lancer's outfits stick out the most as being outdated. It's always been a problem of inconsistency though, since Archer, Berserker, and Saber are much more detailed than Lancer or say...Rider. Even Caster is often little more than a hood and a cape (except in this arc).

Maybe it was just the art style making it stick out more. There were scenes were Rin's ass would suddenly look huge (and she's no Sakura or Tohsaka Aoi!) and then back down to her slender normal size moments later.