User blog comment:IamJakuhoRaikoben/Chapter 496: Forward, Review./@comment-25395791-20160802141718/@comment-7418318-20160802152925

You say that as if her first outfit had been modest back in the Nirvana arc.

And I think the fan-service quota, if there is something like that, would have been fulfilled by Mirajane's shredded outfit alone, but that's what she's been wearing the entire arc, so why change it now.