Sienna Miller was deep in conversation while walking her dog in NYC yesterday. The weather hasn't officially turned wintry just yet, but Sienna was all wrapped up in a hat and scarf for her early evening stroll. She was considerably less bundled for her appearance on The Late Show Tuesday, when she sat down with Dave to chat about her upcoming Broadway debut. Her rehearsal and performance schedule is probably rigorous, but she still has time to let her hair down whether it's with her pup or during a night out on the town.
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