The Unexpected Wedding Guest
By the time The Speidi Wedding came around, Heidi and Lauren were not on speaking terms. So, it was weird to see Lauren attend Heidi’s wedding. It was also the last episode that Lauren was going to be in and Lauren wanted to leave as soon as possible. All the fake love was visible.
Source: http://www.mtv.com/news/1612953/on-the-hills-finale-kristin-overshadows-laurens-appearance-at-speidis-wedding/