friends will come back to buckingham palace for a dinner meld by the prince of wales. a sit-down dinner, formal affair. harry gives his best man speech and the disco begins. apparently they've set up a disexpo in three of the state rooms in buckingham palace. allegedly we'll see the throne room as a chillax room. harry is calling it wedding administration, his wedding planning. >> reporter: there's three dresses? how is that going to work? >> so many rumors about the dress. is -- it is bride's prerogative. she wants to surprise him. he will be the last person in the world to see her wedding dress. rumor is, diamond and pearl detailing. apparently she will be wearing, we think the cambridge tee are remark the tiara that the queen gave diana for her wedding. diana had to give it back to