Complex sentence: Lawrence's third collaboration with David O. Russell, "Joy", was released in December 2015, with Lawrence playing the title character, Joy Mangano, the inventor of the Miracle Mop.
Split into simpler sentences: Lawrence's third collaboration with David O. Russell, "Joy", is scheduled for a December 2015 release. She portrays the titular character, Joy Mangano, the inventor of the Miracle Mop.