Charlize Theron  reunited with Sean Penn  in Cape Town, South Africa, on Friday when she landed in her native country to begin filming on their new movie, The Last Face. (Charlize will star alongside Javier Bardem , and Sean will direct.) Before she landed in Africa, Charlize sparked engagement rumors when she was spotted at LAX wearing what looked like an engagement ring . While a source has said that the ring wasn't for an engagement , the rumors are still floating around that the pair may be prepared to take the next step. Back in April, sources said that they "wouldn't be surprised" if the couple took a trip down the aisle soon . Time will tell if Charlize and Sean are actually engaged!