Kendall and Cara Rocked the Easiest BFF Costumes Ever

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Kendall Jenner and Cara Delevingne are the original high-fashion BFFs, with plenty of shared shoots and catwalks behind them. But their latest collaboration is their best yet, simply because it's not just fun to look at, it's also the easiest Halloween costume inspiration for you and your partner in crime.

Kendall and Cara feted Roberto Cavalli's wife, Eva, at a birthday party cum masquerade ball, transforming simply sexy outfits into costumes for the evening. The fashionable friends donned coordinated lacy separates — Kendall opting for a see-through skirt and crop top by Katie Ermilio, while Cara paired a lacy crop top with trousers. The duo then donned matching velvet blazers and mysterious masks to finish off the alluring Halloween-ready ensembles. Read on to see Team CaKe's sexy coordinated ensembles, and then shop for the one accessory that will help you re-create their looks.

Getty | Keith Hewitt

Cara's all-black ensemble included open-toed booties, slim trousers, a lacy crop top, and a velvet jacket. She accessorized with layered necklaces, a lip ring by Established jewelry, and a mask.

Getty | Keith Hewitt

Kendall's sexy sheer Katie Ermilio skirt left her underthings peeking out from under her long jacket.

Getty | David M. Benett

The duo posed together in their coordinated ensembles, including their lacy masks.

Getty | David M. Benett

Cara's sister Poppy Delevingne also dressed up for the occasion.