'Real Housewives' NeNe Leakes -- Warns Kenya and Claudia ... Call Me Bipolar and I'll Sue

"Real Housewives of Atlanta" star NeNe Leakes says it doesn't matter they're all on a reality show -- if Kenya Moore and Claudia Jordan don't zip their lips she'll sue.

Both Moore and Jordan got warned by Leake's lawyers Tuesday to stop damaging her brand with smack talk. NeNe's pissed at Jordan for calling her bipolar and, even worse, sporting bad veneers. Her beef with Moore is unclear.

Two things strike us. It's a little "pot calling the kettle black" because NeNe's been known to go after other cast members ... por ejemplo saying Claudia was such a tramp "her clit has left her body."

And you gotta wonder what producers think about their stars setting limits on the drama.