Reba McEntire will appear in a new episode of the CMT comedy series, Working Class, on Friday night (Feb. 4) at 8 p.m. ET/PT. In the episode, Carli (Melissa Peterman) feels threatened when her ex-husband's (John Schneider) new "sugar mama" (McEntire) tries to buy her kids' affection with expensive gifts. Peterman and McEntire first worked together on the Reba sitcom from 2001 to 2007 where Peterman played the new wife of McEntire's ex-husband. Last weekend's premiere of Working Class was the highest-rated and most-watched series debut in the network's history. A sneak peek of McEntire's guest starring role, also featuring John Schneider, is now streaming on CMT.com.