Sienna Miller and her daughter Marlowe Sturridge stepped out to grab coffee and go for a walk in Central Park in NYC on Saturday. Later that evening, the actress slipped into a sexy Alessandra Rich dress for an event out in the Hamptons. Sienna attended a reception honoring Richard Gere and others as part of the Hamptons International Film Festival. Sienna and her fiancé Tom Sturridge arrived in New York earlier in the week ahead of the weekend's festivities. Baby Marlowe, who was born in July, is quite the international traveler already. Tom and Sienna brought Marlowe to Italy in late September, and now she's checking out the sights stateside.