... but have a look on how Blair Waldorf styles her uniform in Gossip Girl ...
Even if I am not sure if this outfit is really meant to be a uniform, it inteprets perfectly the preppy-style. And I really love this picture of Blair. But sadly we can´t wear outfits like this in school ... our dresscode is too dure.
Here are some more examples for how the Gossip Girl girls style their uniforms:
The first picture shows Jenny with a caro skirt and a pair of big braces.
This picture shows Serena in a casual uniform with a vest and Blair in a smarter and preppy uniform with a pencilskirt.
And in the last picture you can see the clique, all dressed smartly, with bow ties instead of ties (apart from serena)