Christian Marie Serratos (born Bernardi, ; born September 21, 1990) is an American actress. She is known for her roles as Rosita Espinosa in AMC's "The Walking Dead" TV series, Suzie Crabgrass in the Nickelodeon series "Ned's Declassified School Survival Guide", Angela Weber in "The Twilight Saga" series and as Selena in Netflix's "".