Does her Touhouvania outfit really qualify as "alternate costume"?
So, first of all: Simple questions should never be downvoted. By downvoting you only disencourage users to ask helpful thing that may not only help the one who asks but the broader community.
As for this question: Yes, most definitely since it's not her canon outfit but from a fan-game if i remember correctly. There is official alternate costume but since this is a fan-game it shouldn't apply either.