That's because when they were at home, Angie decided to do some sewing on the wedding gown while Randy was modeling it. Angie ran to the mall, of course, to buy a sewing kit. And of course, while she was gone, Frankie burst into the room and carried Randy out to a justice of the peace. So of course, Angie, Jesse and the rest followed them and got ready for the wedding at the justice of peace's house. I mean really, Stockard, couldn't you figure that perfectly sensible scenario out by yourself, lol?
<-----I'M TOTES ROLLING MY EYES