Christina Ricci has joined the cast of Lana Wachowski's 'The Matrix 4'. The action film will also feature Keanu Reeves, Carrie-Anne Moss, Jada Pinkett Smith, Yahya Abdul-Mateen II, Priyanka Chopra Jonas, Jonathan Groff and Neil Patrick Harris. Christina previously collaborated with Lana on the 2008 film 'Speed Racer', which also starred Emile Hirsch and Scott Porter.