Happy 24th Birthday to Miss Kristin Cavallari!
Back when Kristin Cavallari first started making red carpet appearances she was all about keeping things casual, with jeans and Summer dresses on high rotation. Fast-forward a few years and the reality star’s style has gone the way of her Hills co-stars — she loves short, strapless frocks, gets to choose her red carpet getup from designers like Zac Posen and Zuhair Murad, and has a shoe wardrobe filled with Sergio Rossi heels and Christian Louboutins. So while she doesn’t have a fashion line under her belt (yet), she turns 24 today, meaning she’s got another reason to frock up and celebrate! Enter our gallery to see her style transformation, and here’s to wishing Kristin a fabulous birthday!