WENDY WILLIAMS WAS A NO SHOW AT THE WHITE HOUSE CORRESPONDENTS DINNER BECAUSE OF OMAROSA!

And the catfight continues!
We hear Wendy Williams was a no-show at the White House Correspondents Dinner on Saturday night, because the seating arrangements had her dining right next to her archenemy – Omarosa Manigault-Stallworth.

In what our source is calling a "gross oversight," the American Urban Radio Network, who invited both of the women to the lavish annual fete, apparently didn't realize they had an ongoing feud.

We're not sure where they've been, but the talk show host and the one-time "Celebrity Apprentice" star have had it in for each other since they got in a spat on Wendy's show in 2008.

The tiff began when Omarosa, who was promoting her book, "The B---- Switch" on the Fox show, made jabs about Williams' rise to fame and called her disrespectful.

Never one to hold back, Williams called the reality TV star a "a typical angry black woman" right then and there.

"Omarosa is a delusional, D-list, pathetic woman," Williams said in a later interview.

So it's not hard to see why Wendy wasn't too pleased when she found out she'd be rubbing elbows with her at the dinner.

"Wendy absolutely flipped out when she heard Omarosa was going to be seated at her table," our spy says. "She called the the AURN and was absolutely livid."

We hear that the organization (a rep for whom did not respond to calls for comment by deadline) apologized to Williams, but that she still refused to attend.

A rep for Williams would only confirm that she was in D.C. (she attended a brunch that day) and that she was not with the AURN crew at the dinner. But when reached, a source close to Williams chimed in that any insinuation regarding Omarosa's role in that is "false."

But Omarosa sure seemed to think otherwise when she sniffed to us yesterday, "I recognize the importance of this major event, and I would personally never slight the White House Press corps."

Meow!