"American Horror Story
" has added yet another cast member, and she's getting down with Adam Levine
. According to EW
, "Step Up" star Jenna Dewan
-- and wife of Channing Tatum
-- is headed to the FX series as the Maroon 5 frontman's love interest. The duo will reportedly have a pivotal role in Season 2. Dewan's other TV credits include "The Playboy Club
," "Melrose Place
" and more. In other casting news...
Julian Morris is headed to "Once Upon ...