Of all of them, number four is where you look the most genuinely happy. I would keep that one. The stripes are a nice touch, and keep it busy but not too busy, and having your hair up really brings out your smile and doesn't drown your face. (I am quite familiar with the hair-drowning-face thing in pictures. I have more hair than anybody I know. That's why I usually wear it half-up, half-down for pictures.) Anyway. I like number four.