Credit: Shane Gritzinger/FilmMagic

The Real Housewives of New York may be adding two new castmates for its third season -- but no baby for Bethenny Frankel, says her pal Jill Zarin.

Responding to yesterday's reports that Frankel, 38, is pregnant, Zarin insisted to "It's a rumor!" at Monday's opening night party for the Broadway show Memphis.  "I don't know why someone started that," she added.

But Zarin was still thrilled over news of Frankel's engagement to Jason Hoppy, her boyfriend of 11 months. "Isn't that great?! I called, reached out and sent something to the house," she said.

Zarin, 46, had nothing but praise for the spouses-to-be. "They're a great couple. He's a very nice guy -- very handsome and sweet."

The Manhattanite had less to share about the two newbies (Sonja Morgan, 45 and an as-yet-unidentified woman) entering the Housewives fray this season. "I didn't know either of them before," she admits.

Will any original housewives be leaving the cast to accommodate the new additions? "I don't know anything," she claimed. "All I can say is that I've never seen eight housewives!"