Every public appearance of a star will be seen by many people. Especially at official events. That being said I said it's not an issue at all.
Yes that's that other criteria I talked about and I have yet to see a character who is treated as nothing more than eye candy in the MCU.
See this where we are getting into the whole fiction aspect.
Wanda is a "mage" type character with a whole lot of abilities whichs means she has additional freedom in what she can wear. It's pushed to the point where it doesn't even matter what she is wearing at all. I mean she took out an entire force of Ultron bots and a superhero team wearing nothing more than a shirt and jeans. She could have been naked and her battle with Thanos wouldn't have changed at all.
But even Gandalf who is not even doing all the crazy stuff Wanda is doing and instead was fighting in melee was still just wearing simple robes all the time because he's a wizard and that's just how they dress. Simple as that.
Realism should never dictate everything in fiction especially in
escapism genres like Fantasy or anything with superheroes. If it would then every single character should be wearing a helmet and body armor because additional protection is never bad but nobody really wants that.