In fact, Stewart says Trump will put in an appearance on her show, which debuts Wednesday, Sept. 21 on NBC -- a day before the fourth Trump-led "Apprentice" begins.

"Donald will be on the show in a cameo where he takes a tour of the loft where the candidates are housed," Stewart told reporters Thursday (Aug. 25) at a press conference. "It's quite different" from the Trump Tower suite where contestants in the original show live, she adds.