Christina Haack laughed off a "sister wives" comment about her friendship with her husband Tarek El Moussa's new wife Heather Rae El Moussa.

Tarek El Moussa and Heather Rae El Moussa ... complete surprise in a follow-up post. Tarek told People he knew he wanted to make Heather his wife after seeing how she was with his children.

Christina Hall said her ex-husband Tarek El Moussa’s mom warned her against ... show during a competition with Tarek, 43, and his wife, Heather Rae Young, on “The Flip Off.” ...