People crying bullshit, makeup doesn't make you look like an entirely different person are woefully ignorant. Yes light makeup doesn't change how someone looks but it most definitely changes how you would SEE that person and that can make someone look like an entirely different person. And heavy makeup DOES make someone look like an entirely different person and can change the actual shape of the face.
You can literally see the change a little bit of makeup does for her, she goes from a droopy sleepy looking girl to a sharp bright-eyed energetic looking girl. Someone who only remembers her for being a dull and boring looking girl will not make the connection between the two and vice versa. And yes, this also happens in real life.