Mako does kind of look like what’s her face from episode 14. Just sayin
The headband is the same color in the art, so I'm positive that is what happened.
Given that Ami and Rei are also wearing two of Usagi's disguises, there's clearly a connection with their wildly inaccurate dreams. Perhaps someone was only given art of Usagi in those outfits and assumed she was taking on the roles of their dreams? I have no idea what went wrong, but this seems less "random" and more "turned upside down from what actually happened."
By contrast, while Haruka and Michiru are off, too, at least their dreams are closer in the direction on their characters.