originally i was going to give the bride away. the reporter who knew princess diana the best. the one thing she wouldn t want to do of course is upstage the bride, or would she? and a sea of other guests. we re going to bring you a bit of royal sparkle. i was just trying to impress you. this is a special edition of piers morgan tonight. i m outside buckingham palace. there s less than 48 hours to go to the big wedding. the crowds, as you can see, beginning to flock all over london for the big day. and i m being joined by two royal experts, who ladies who ve written very successful books. katie nicole, who wrote william and harry: behind the palace walls. and i m also joined by phillipa gregory, historian and best-selling author of the red queen, which is today number one. congratulations. hardly surprising considering everybody s going royal crazy here.