Katerina Alexandre Hartford Graham was born on September 5, 1989 in Geneva, Switzerland. She has grown up in Los Angeles, California. Her parents are Joseph and Natasha Graham. She is of mixed descent. Her father is of Americo-Liberian descent, while her mother from Russia a Poland. She also has siblings, half-brother Yakov. Her parents divorced when she was just five years old. She studied at the Hebrew school.

She came to the entertainment industry when she was six. She has made her first appearances in different commercials like Barbie, K-Mart, Pop-Tarts. She also was a dancer and was involved at the BET Awards with a performance at the background. In addition to her commercial work she also appeared in several music videos of Akon, Christina Millian, Justin Bieber, 112 and John Legend.

She made her first appearance on television as the cast of teen sitcom Lizzie McGuire along with Hilary Duff in the 2002. In the 2004 she appeared in several TV series like “Grounded for Life” and “Like Family”. Afterwards, she has made her appearance in numerous movies and tv shows like “17 Again”, “Johnson Family Vacation”, “Malcolm in the Middle” and “Joan of Arcadia”.

She got her real breakthrough time with the role of Bonnie Bennett - a teenage witch from the supernatural TV series “The Vampire Diaries”. She even got a title of "Scene Stealer Female" at the Teen Choice Awards for that role. She reached a huge level of fame. She is the main cast and plays there till now. Previously to Vampire Diaries she appeared in 3 episodes of “Hannah Montana” TV series.

In the 2011 she appeared in the movies “The Roommate”, “Honey 2” and “Dance Fu”. The next year she played the role of Ingrid in the science fiction, dance battle, romance film “Boogie Town”. He played the role of Diamond in the 2014 movie “Addicted”. Other her movie appearance is in the short film “Muse”. Recently, she played the role of Jada Pinkett in the “All Eyez on Me” and Alicia in the “Where's the Money”.

She also won the Creative Award in a nomination of Black Women in Film Association. In addition to her mainly work on TV series and movies she also is a singer and in the 2015 at released her first studio album, which was titled “Roxbury Drive”. Previously, she also released several singles "Cold Hearted Snake", "Put Your Graffiti on Me" and "Wanna Say".

She is not married yet. She dated with Cottrell Guidry since 2008. In the 2012 the couple announced about their engagement. In the 2014 they broke up and called off their engagement. She has a net worth of 3 million dollars. There is no any news about his relationship and dating for that moment. Despite being a celebrity, she chooses not to disclose the details of her personal life to her fans. The information about her can be found in Wiki as well as on several social media sites, including popular Instagram and Twitter.