>> they had to. >> they said on the invitation you could actually wear lounge suits, too. >> this is a big moment. he was the one who performed "candle in the wind" at diana's funeral. i suspect he hasn't been back to the abbey since. elton was in tears as he performed that song. i think it's a bittersweet moment for him pep was a close friend of diana's. diana would have loved this. the great tragedy is it this was right up diana's street. she loved parties. >> and above everything else, loved her boys. >> above everything else, loved her boys. >> she would be bustling with pride. >> she used to call young william, ddg, drop dead gorgeous. >> i think what she did so brilliantly she enabled them to have a normal upbringing at the same time, we remember her riding on roller coasters, going to mcdonald's, doing things normal kids do. >> imagine the pressure when elton john comes and sits next