Katerina Alexandre Graham (born September 5, 1989), known professionally as Kat Graham, is a Swiss-born American actress, model, singer, and dancer. She is best known for her role of Bonnie Bennett on The CW television series The Vampire Diaries. Graham worked for Mary Kay company in 2002.[1][2][3] Read more: Age in 2013: 24 (5 September 1989) Height in Meters: 1.58m Height in Centimeters: 158cm Height in Feet: 5