Jenna Lee Dewan (; born December 3, 1980) is an American actress and dancer. She started her career as a backup dancer for Janet Jackson, and later worked with artists including Christina Aguilera, Pink, and Missy Elliott. She is known for her role as Nora Clark in the 2006 film Step Up. She has also starred on the short-lived NBC series The Playboy Club (2011) and had a recurring role on the FX series American Horror Story: Asylum (2012). She portrayed Freya Beauchamp on the Lifetime series Witches of East End (2013–14), Lucy Lane in The CW series Supergirl (2015–16) and Superman & Lois (2022–23), and Joanna in Soundtrack (2019) on Netflix. Dewan has hosted the reality television shows World of Dance (2017–18) and Flirty Dancing (2019) and served as a judge on Come Dance with Me (2022). Since 2021, she has appeared in a supporting role as Bailey Nune on ABC's The Rookie.