Katerina Alexandre 'Kat' Graham (born September 5, 1989) is an American actress, singer, songwriter, record producer, dancer, and model. She has appeared in numerous television shows and film productions, as well as music videos. In 2009, she began appearing in a supporting role as Bonnie Bennett in The CW television network show, The Vampire DiariesThis book is your ultimate resource for Kat Graham. Here you will find the most up-to-date information, photos, and much more. In easy to read chapters, with extensive references and links to get you to know all there is to know about her Early life, Career and Personal life right away. A quick look inside: Katerina Graham, 17 Again (film), Honey 2, Boogie Town, The Roommate, Dance Fu, The Vampire Diaries.