Jennifer Lopez is ready to paint the town red! The multihyphenate’s new concert residency, Up All Night Live in Las Vegas, kicks off at The Colosseum at Caesars Palace on December 30 — and she’s giving Us Weekly a first look at what fans can expect. In exclusive photos from rehearsals, Lopez, 56, and her 12 backup dancers are seen running through the choreography for the high-energy show, including one sequence on a small, elevated platform. An athleisure-clad J. Lo is all smiles in the images as she holds a bedazzled microphone and practices her dance moves in a large studio. At another point...

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