She's the replacement for LC in The Hills...


...and she's already causing a stir by going after Audrina's man, Justin Bobby, but what we want to know is if Kristin suits her long blonde locks worn up or down? Take a look and have your vote below:

Hair up

Hair down

So, Kristin Cavallari's beauty battle  - does she suit her hair best up or down?

- Click here to have your say on more celebrity beauty battles! -