I once played a gig with some band from the burbs where the pudgy (not an insult, but a fact for purpose of illustration... I would now easily qualify) frontman was doing scissor kicks every song... wearing jogging pants with a visible hole in the crotch. That's just about the only way this could have been worse. ... I also remember the bass player dressed in all orange - hat shirt and pants... but not all the same orange (which is a thing that bothers me, but isn't really important). Aside from the frontman the rest of the band were statues.
As an opposing viewpoint to our dear high heeled one, coming from a shoegaze appreciating background, I would prefer people err on the side tasteful/stoic vs active/ponce. But that is a cover band, which is a different animal in terms of crowd expectation.