Twilight‘s Christian Serratos is joining another blockbuster genre franchise, this time on TV. Serratos has been cast in the upcoming fourth season of AMC’s hit zombie drama The Walking Dead. She will play the tough and beautiful Rosita Espinosa, a character introduced in Issue 53 of the comic book. Rosita survived the mysterious undead apocalypse that has taken over the planet. Serratos will recur on Season 4 with an option to become a regular in Season 5.