Sienna Miller and Tom Sturridge held hands while out on a walk in NYC yesterday afternoon, and later in the day Sienna also cuddled up to their 9-month-old daughter Marlowe during a playdate. On Tuesday, though, Sienna was solo as she embraced the warm weather during a lunch run, while Tom spent the day out with Marlowe and his mom. The Miller-Sturridge clan is in the Big Apple as Tom works on his new Broadway play, Orphans. The production is currently in previews but will celebrate its official premiere on April 18. Apparently, Sienna's staying at Channing Tatum's NYC apartment while in town. Sienna and Channing became friends working on G.I. Joe: The Rise of Cobra and more recently linked up on the set of Foxcatcher. At the moment, Channing's in Sienna's UK place while he and his pregnant wife, Jenna Dewan, are based there during production on his next movie Jupiter Ascending.