Jessica Suzanne Lowndes ( ; born November 8 , 1988 ) is a Canadian actress and pop singer - songwriter , she is best known for her role as Adrianna Tate - Duncan on the CW teen drama series '' 90210 '' .
Jessica Suzanne Lowndes ( ; born November 8 , 1988 ) is a Canadian actress and pop singer - songwriter . 
 She is best known for her role as Adrianna Tate - Duncan on the CW teen drama series '' 90210 '' .