On Saturday IVANA TRUMP will walk down the aisle to wed her Italian actor beau, ROSSANO RUBICONDI and ET has all the extravagant wedding details -- straight from the bride-to-be herself!

Ivana and Rossano's friends and family from all around the world are flying in for the nuptials, taking place at her ex-husband DONALD's posh Mar-a-Lago estate in Palm Beach, Florida. Also crossing the pond for the big day? A 24-piece orchestra from Paris, thousands of roses, a DJ from Europe and a cake from Germany!

Ivana admits that she is nervous but she has been keeping busy working around the clock for the last four days to make sure everything is just right.

ET also caught up with Ivana's daughter, IVANKA, at Thursday night's wedding celebration kickoff!

"We've lended emotional support," she says of her and her siblings' involvement in the preparations. "She knows what she likes, she knows what she wants, she has it down pat!"

Ivanka also talks about what she and her brothers plan to say on their mom's big day. "It's going be a little off the cuff," she admits. "We know how to do this type of thing. We will speak from the heart."

Watch tonight's ET for an inside look at the lavish "I do's"!