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The hottest thing in Hollywood right now is Helmut Lang’s sexy, snuggly “Chasm” jacket, spotted on A-listers from Halle Berry to Kate Bosworth. In the five-way fashion faceoff, the stars showed how versatile the jersey-and-leather motorcycle jacket could be, wearing it with a range of chic and casual looks. Halle and Kate Beckinsale layered the $1,140 shearling coat over comfy travel attire while at the airport; the leather sleeves added edge to January Jones’s and Ciara’s errand-running ensembles and basic boots; and Kate Bosworth wore hers over a flirty floral Dolce & Gabbana maxidress to stay warm while at Sundance. Tell us: Which star looked best in their Helmut Lang jacket?