She was first seen in a commercial at the age of 11 months, with an ad for a Playskool toy train. Then, at the age of little less than 5 years, she was offered role on the soap opera One Life to Live in 1991, where she remained until 1997 and appeared in 25 episodes. Soon then, she went on to feature in many feature films and TV movies. She is undoubtedly best known in audiences for her performance as "Claire" on the famous TV show, Heroes which began in 2006.
She has been associated with many animated films, her launch pad was with the movie A Bug's Life as "Dot", then worked in Dinosaur which cane in the year2000. She was also a part of famous movie Remember the Titans in 2000 which had stars like Denzel Washington and Joe Somebody. Along with acting in movies and television she has been part of more than 50 commercials.
In her personal life she is married to Ukranian Boxer Wladimir Klitschko in 2013. The couple is blessed with a daughter Kaya Evdokia Klitschko in 2014.