Alison Elizabeth "Ali" Larter (born February 28, 1976) is an American actress. She is best known for playing the dual roles of Niki Sanders and Tracy Strauss on the NBC science fiction drama Heroes as well as her guest roles on several television shows in the 1990s. Larter's screen debut came in the 1999 film Varsity Blues, followed by the horror films House on Haunted Hill as Sara Wolfe, and Final Destination and Final Destination 2 as Clear Rivers. Major supporting roles in the comedy Legally Blonde and the romantic comedy A Lot Like Love led her to lead roles as the titular character in Marigold and in the 2009 thriller Obsessed. Larter achieved wider fame after her portrayal of video game heroine Claire Redfield in Resident Evil: Extinction and Resident Evil: Afterlife. Larter's presence in the media is reinforced by her appearances in lists compiled by Maxim, FHM and Stuff as well as People magazine's "Best Dressed List" in 2007. After a three-year-long relationship with actor Hayes MacArthur, the two married in August 2009. They have a son, Theodore Hayes MacArthur (born December 2010) and daughter Vivienne Margaret (born in January 2015).