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Watch: Chrissy Teigen calls out John Legend’s on-air wardrobe malfunction

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Singer John Legend was Jimmy Fallon’s guest on “The Tonight Show” when Fallon pulled Legend’s wife, Chrissy Teigen, from backstage to join a game of charades. Legend was trying to mime “The Little Mermaid” when Teigen noticed his fly was undone, on national TV! What would you have done?