And the Wiki says…
Jenna Lee Dewan (born December 3, 1980) is an American actress.
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Prior to starring in film, she was a dancer, working for various famous performers such as Justin Timberlake, ‘N Sync, Sean Combs, Toni Braxton, Celine Dion, Pink, Missy Elliott, Ricky Martin, Billy Crawford, and Janet Jackson in both live performances and music videos.
Dewan starred as the title character in the 2005 horror film Tamara, playing an unpopular high school student who is picked on by classmates, dies, is buried by her classmates, then comes back to seek revenge. Other films that Dewan has appeared in include Waterborne (2005), Take the Lead, Step Up, and The Grudge 2 (all released in 2006). Dewan filmed Love Lies Bleeding with Christian Slater in New Mexico in March 2007. Also in 2007, Dewan filmed “The Six Wives of Henry Lefay”, and “The Jerk Theory “. [Wiki]