Jon and Kate and the Kids Pose Together for a Photo Shoot

Jon and Kate Gosselin reunited again Saturday for a TLC photo shoot. The shoot - at City Stage in Manhattan's Chelsea neighborhood - also included stars of the network's reality show The Little Couple, among others.

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When Kate and the kids arrived, photographers tried to take her picture but were blocked by security guards. An eyewitness tells Us, "Kate's security held up these huge umbrellas and white tables to try and block the photographers from getting pics."

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Things went smoother later in the day. But when the shoot ended around 8:30 p.m., the kids got sad as they parted ways with their dad.

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Later in the night, Jon -- who just bought a new bachelor pad at the Alexandria building on Manhattan's Upper West Side -- dined with a tabloid reporter.