Who's Jenna Dewan?
Jenna Dewan Tatum is an American actress and dancer. She began her career as a backup dancer for Janet Jackson, and later worked with artists including Pink, Missy Elliott, and Christina Aguilera. She is known for her role as Nora in the 2006 film Step Up. She has also starred on the short-lived NBC series The Playboy Club and had a recurring role on the FX series American Horror Story: Asylum. She was Freya Beauchamp on the Lifetime series Witches of East End and as of 2016 was playing the recurring role of Lucy Lane in Supergirl. Dewan has been married to actor Channing Tatum since 2009 but they are now seperated.
*Source: Wiki Link

Notable Films/TV
Tamara (2005)
Take the lead (2006)
Step up (2006)
The Grudge 2 (2006)
Balls to the wall (2011)
10 years (2011)
Melrose Place (2009)
The Playboy Club (2011)
Witches of East End (2013-2014)
The Mindy Project (2014)
Supergirl (2015-)

*Source: Wiki Link

Details and Trivia
[+] Date of birth: December 3, 1980
[+] Height: 5' 2" (1.57 m)
[+] Has green eyes.
[+] Married to Channing Tatum since 2009.
[+] Has a dog named "Meeka" with her husband Channing Tatum.
[+] Attended the University of Southern California, but did not graduate.
[+] Was a member of the Pi Beta Phi sorority at USC.

*Source: IMDB
* More About Jenna Wiki Link