*The cast of Bravo’s recently-wrapped “Real Housewives of Atlanta” will appear tonight (Feb. 14) on CNN’s “Piers Morgan Tonight,” while Iyanla Vanzant and Oprah Winfrey get into a heated discussion about what went wrong between them during an episode scheduled to air on Wednesday (Feb. 16).

Vanzant, a self-help expert, was a regular on “Oprah” during the 1990s, but her subsequent attempt to launch her own talk show failed.  Now, Vanzant reunites with Winfrey for the first time since her last “Oprah” show appearance in 1999 to talk about her fall from grace and what’s happened in her life in the years since.

Tonight’s “Valentine’s Day” edition of “Piers Morgan Tonight” features Donny Deutsch (host of Bravo’s new “Love Calling”) and “Real Housewives of Atlanta” stars NeNe Leakes, Kandi Burruss and Phaedra Parks.

The conversation, taped last Wednesday (Feb. 9), includes several viewer phone calls answered by all four guests. According to the New York Post, NeNe took issue with some advice Deutsch gave to a caller who had asked what to get her husband for Valentine’s Day.

Deutsch suggested she “try something new for her man,” but Leakes reportedly interjected: “Why does it always have to be the woman who has to try something new? Why can’t the man come up with something new? It’s always the same way and the same size every time. Try something new — did it grow?”

During the visit, NeNe’s crush Anderson Cooper even stopped by to say hello. Click here to watch.

Kandi dished about tonight’s show to AtlantaBoy.com, stating: “Piers was pretty cool. He was funny. When we were off-camera, he was talking to NeNe about the ‘Celebrity Apprentice’ because he won the first season. And he told her, ‘If I was on with you, I would KILL you.'”

Tomorrow on “Piers Morgan”: Janet Jackson.