Sienna Miller and Tom Sturridge took their baby daughter, Marlowe Sturridge, out for a walk Saturday in NYC. The weather was perfect for an early Spring stroll, but Marlowe was still protected from the chill in an adorable onesie. Tom was able to join his girls during a break from rehearsals for his new play, Orphans. The production, which got off to a rocky start when Shia LaBeouf dropped out due to a feud with Alec Baldwin, is now proceeding toward its March 26 opening with Shia's replacement, Ben Foster. This will be Tom's second stint on stage this year — in January, he appeared for a limited time in No Quarter at London's Royal Court Theatre.