Helena Bonham Carter, Chris Messina and Marissa Long are officially heading to “The White Lotus.”Bonham Carter and Messina, who have been rumored to be joining the new season of the Mike White-created drama series, have officially joined the Season 4 cast alongside Long. The three new recruits join the existing Season 4 cast, which also includes AJ Michalka, Alexander Ludwig, Steve Coogan and Caleb Jonte Edwards. The cast will be part of the new group of White Lotus hotel guests and employees, who the series will follow over the span of a week. Bonham Carter is represented by Nicola van Gelder of Conway van Gelder Grant. Messina is represented by Entertainment 360, CAA, Sloane, Offer, Weber and Dern, LLP and Long is represented by Canopy Media Partners, Next Model Management and Yorn Levine Barnes Krintzman, Rubenstein, Kohner, Endlich, Goodell & Gellman.