I was looking at your pictures when a name finally surfaced in my mind: Your celebrity lookalike is Sandra Bullock. No, seriously. You've got the same dark, wide-set eyes & I think a similar forehead. (Someone more adept at posting pictures needs to put a picture of her next to a picture of you.)
She's nominated for Best Actress this year, so if you go to an Oscar party, you should totally go as Sandra Bullock.