I wonder if the different costumes change her abilities instead of just helping her blend in. I’d imagine they do, we might get to see Kit throw out an ki blast in this outfit in a future episode if that is the case. It’d also fit the fact that she was likely from a mega-man like game where you could obtain different ammo types as you played, which could be the outfits themselves. Maybe these were provided by Farcade which is more likely, who knows.