What does DONALD TRUMP think about ex-wife IVANA's weekend wedding and her hubby-to-be, Italian actor ROSSANO RUBICONDI? We hit up the "Apprentice" master, who always pulls no punches with his candor.

Trump just opened the Trump International Hotel & Tower in Las Vegas, and his Miss USA pageant -- hosted by DONNY and MARIE OSMOND -- happens tonight at the Planet Hollywood Resort & Casino on the Vegas Strip. Will he make it to Ivana's wedding at Donald's posh Mar-a-Lago estate in Palm Beach, Florida?