She remains on amicable terms with ex-partner Tom Sturridge as they continue to co-parent eight-year-old daughter Marlowe. In good company: Sienna Miller was once again accompanied by former boyfriend Tom Sturridge while venturing out in New York City on Tuesday Sienna exuded effortless style by opting for a tasteful cream trouser with a high-slung waist, flared leg and distinctively buckled …