Katerina Alexandre Hartford Graham is an American actress, singer, dancer, and activist. She played Bonnie Bennett on The CW supernatural drama series The Vampire Diaries (2009–2017). Her film credits include The Parent Trap (1998), 17 Again (2009), The Roommate (2011), Honey 2 (2011), Addicted (2014), and All Eyez on Me (2017). In music, Graham has released two extended plays and four studio albums.

The Vampire Diaries is an American supernatural teen drama television series developed by Kevin Williamson and Julie Plec, based on the book series of the same name written by L. J. Smith. The series premiered on The CW on September 10, 2009, and concluded on March 10, 2017, having aired 171 episodes over eight seasons.