It kind of is. That's her entire thing. She's an actual idiot who poorly assesses situations, is quick to jump to conclusions and into action, and enjoys showing off her body. That's her character right there.
^^^This
You don't have to like her character...but, she DOES have a consistent personality..
There's always a dumb reason why female characters just must be half naked, lol. I'm guessing Mika breathes through her breasts and buttcheeks, same with Cammy. And really, having sexy outfits is okay, but it's lazy, boring and silly when sexy is actually the default and you can't escape it.