Nikiolina Konstantinova Dobreva also known as Nina Dobrev is a Bulgarian-Canadian actress and model.  She was Mia Jones on the Degrassi: The Next Generation (2006–2009), and played Elena Gilbert/Katherine Pierce on The CW's The Vampire Diaries.

8 Things You Didn't Know About Nina Dobrev:

Nina Dobrev Shows Off Her Action Hero Chops - CONAN on TBS: