Naomi Watts as pregnant Russian prostitute

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray

All photos: Splash/All Over Press Naomi Watts plays a pregnant Russian prostitute while filming St. Vincent De Van Nuys in New York Monday. The movie is a comedy that follows a single mother, played by Melissa McCarthy, who leaves her 12-year-old son in the hands of her bad-tempered neighbour, played by the hilarious Bill Murray