Ashlee Simpson will wed Pete Wentz in a secret ceremony on Saturday.
The 'Pieces of Me' singer and the Fall Out Boy rocker - who got engaged last month - have told guests to keep the day free although they have not let anyone know where the nuptials will take place.
A source told Us Weekly magazine: "Proper invites have not been sent out but guests have been given a save the date notice."
On Friday, close friends and family will join the couple for a rehearsal dinner.
The following day, guests "will be transported in shuttles to the wedding location."
Ashlee's spokesperson has refused to confirm or deny the rumoured nuptials, saying: "This is a private matter. There is nothing to confirm."
Ashlee and Pete announced their engagement last month, saying: "Yes, we are thrilled to share that we are happily engaged. Thank you for all of your support and well-wishes - it means the world to us."
It was later reported Ashlee was pregnant with the couple's first child and are keen to tie the knot before the baby is born.
A source said: "They're keeping it quiet because they want to get married first."
 |  |  |  |  |
