Parker Posey has joined the cast of ‘The White Lotus’. The 55-year-old actress has been added to the cast of the hit TV series, which will also feature Leslie Bibb and Michelle Monaghan during season three of the show. Elsewhere, Jason Isaacs will also appear in season three of the HBO series, which is set to begin production in Thailand in February. Mike White will again serve as executive producer and director of ‘The White Lotus’, while David Bernad and Mark Kamine will also serve as executive producers of the award-winning TV show. For now, exact plot details of season three remain a close…