S4, E20: When Lauren and Heidi have a run-in, they remember why they used to be friends. Spencer and Heidi deal with fallout of their elopement when Heidi's mother comes to town, and Justin shocks Audrina when he whisks her away to Palm Springs.

S4, E20: When Lauren and Heidi have a run-in, they remember why they used to be friends. Spencer and Heidi deal with fallout of their elopement when Heidi's mother comes to town, and Justin shocks Audrina when he whisks her away to Palm Springs.