Kristin Cavallari is serving confidence at Miami Swim Week ... hitting the runway in a tiny snakeskin-print bikini for her brand's first ever fashion show. The reality star and Uncommon James CEO strutted down the catwalk during her brand's collaboration with RESA, rocking a matching bikini top and sarong skirt while showing off some of her company's new jewelry. Kristin layered on necklaces, bracelets, and rings from the Uncommon James collection, giving fans a head-to-toe look at the brand's