What?! Dude...or dudette...you gotta understand a few things.
1. Jordin does not look fat. She looks like someone who doesn't eat too many sweets, but has a larger body mass because her dad played football. She has curves, ok? You sound like Me!Me! Roth
2.She looks older than 17, so what? you gotta be at least 16 to get in anyway, and she was 16 when she auditioned. If she were 27, then she would have been born in 1979 and not 1989 like Wikipedia says. You haven't seen her birth certificate!
3.They say the first will be last and vice versa.
4.She won because she's a good singer.