The English actress and her boyfriend Oli Green were spotted with the newest member of their family, a baby girl, in London on Wednesday. The pair were photographed while on a casual stroll in their home city. The photos, released by Mail Online, show the actress walking around with the newborn in a baby carrier. Sienna's pregnancy became public when she was seen with a bump while on a beach during a holiday in August. The 42-year-old later revealed during a Vogue interview that she and Oli were expecting a baby girl.