I somehow get this feeling sometime, especially when the drawing isn't a realistic style but a comic or manga or a bit manga style. As it is a way to simplify features, the characters can roughly look like many people in real life and each of us see (or don't see) a resemblance. It's even more the case when we deal with a stylisation of a general kind of female beauty.
I often find that those kind of stylized female beauties with rafined features: long ovale face, high and soflty rounded forehead, long thin nose, elongated eyes etc... like in the manga Cobra^^ generaly remind me of their real-life equivalents. All of them: Eva Green, Keira Knightley, Natalie Portman, Anne Hathaway, Liv Tyler... and those celebrities probaly became famous, among other gifts, because they fited this kind of feminine beauty ideal. Althoug they differ from the idealized drawing as the details aren't the same. I guess it's more like a general feeling of a generic kind of beauty that I guet, so I'd be very curious to see those imaginary faces drawn in a realistic style, to see how they'd really look like in real life !
I *LOVE* when you have a line drawing, or one in black and white, with one colour used to highlight certain areas. Sometimes I've discovered this in my stuff when I accidentally colour parts on my "Lines" layer, then disable the colours layer. Really beautiful drawing.