Designers often rely on defining details to set collections apart. Instantly recognizable accents that transform into trends like peplums, asymmetrical hemlines and frayed edges can also serve as calling cards for certain fashion houses. This week's showdown proves the devil is in the details with stars selecting easily identifiable pieces from Nina Ricci, Roberto Cavalli and Christian Dior. Check out these fashionable doppelgängers and let us know which celeb wore it best.
Double-Take #1: Kate Upton and Nicole Kidman in Nina Ricci
Kate became a household name by posing in swimsuits, so it's always interesting to see the model covered up. She opted for a sophisticated ivory Nina Ricci stretch wool-blend crepe jacket with frayed shoulders and the matching skirt at the VRC Oaks Club Luncheon over in Melbourne, Australia last week. A statement-making black hat, a red Chanel bag and Jimmy Choo Xenia sandals wrapped up the look. Nicole stepped out in the elegant two-piece Pre-Fall 2013 ensemble earlier this year when she appeared at an Omega Ladymatic press conference in Vienna. The watch ambassador naturally wore one of the brand's timepieces and finished off the look with Nicholas Kirkwood's metallic-accented ankle strap sandals. Do you appreciate Kate's ladylike turn at the races or did Nicole have this look all buttoned up way back in March?