Ashlee Simpson AshleePeteWedSaturday.jpg

Yup, it's true - not only is the couple getting married this Saturday, X17 can Xclusively reveal that the nuptials will be taking place at Ashlee's parents house in Encino!

Y'all still think there's even a possibility she's not really preggers? Well, who knows!

People Mag may be getting the official wedding pix from the couple, but you can bet we'll be ready with our lenses come Saturday - in fact, they're already setting up tents now!

Stay tuned for more info and pix coming soon!

UPDATE! According to X17 photogs on the scene, delivery trucks are coming in and out of Joe and Tina Simpson's gated community as we speak write!

Tents are also being erected out back - so it looks to be a good, old-fashioned backyard wedding and NOT a San Diego ceremony as other sites have reported.