Any premium outfits that cost gems in a story are and will always be unavailable for us to receive, unfortunately 
however there is this thread - Limelight Wish List Thread! - in which you can share any assets (clothing, backgrounds, animations) you screenshot from Episode stories that do NOT cost gems to have, and request them there.
Every week for the art release, we’re usually given 1-4 items that are requested on that thread 
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