It must be difficult to be Zac Posen, feeling the weight of being constantly told that the entire fate of American fashion rests on your young shoulders. As Marc Jacobs becomes downright establishment, Posen is the face, the voice, and the spirit of young American fashion. And last night's Spring/Summer 2008 collection shown at Bryant Park certainly captured that vibe: Black, white, and khaki dominated the first half of the show, with many looks unexpectedly invoking a sort of prairie chic. (Anyone else having fantasies of seeing Chloe Sevigny's character go back into credit card debt on Big Love buying all those long skirts and jackets?!) And although the evening looks were less well-done then the day ones, all in all, we conclude that the state of the union is just fine.