Cheryl Tweedy and Ashley Cole will tie the knot in August - but not even their close friends and family know where.
The couple plan to make it so secret that no one knows the date or venue.
And guests will need a code to find out where to go.
Girls Aloud babe Cheryl and England ace Ashley will wed at a castle near London.
Asource said: 'They want to keep the day private for friends and family and don't want it to be a media circus.
'They have decided to send out special invitations with a secret cod