Kristin Cavallari may be the new girl in town (in a manner of speaking), but she hasn't wasted any time making herself at home. The Hills recruit's been hitting up coffee shops, night clubs and beach houses all over the 'hood, rocking her three fave accessories: windblown hair, her trusty BlackBerry and a don't-mess-with-me smile. Peep these pics of K-Cav out and about in sunny California, and don't let that innocent Reese Witherspoon look (bottom, center) fool you. This is one legally blonde chick you do NOT wanna mess with.
