Lauren Conrad and Heidi Montag
Lauren Conrad and Heidi Montag were a match made in MTV heaven when The Hills began in 2006, following Laguna Beach alumna Lauren as she moved to L.A. with her pal to work and attend school. The gals were having a blast living it up in California until Heidi fell hard for bad boy Spencer Pratt. Despite Lauren’s insistence that Spencer was a “shady” person, Heidi failed to listen and eventually picked her boyfriend over her best friend. Even though Lauren reluctantly attended Speidy’s wedding in 2009, she has since revealed that the pair no longer speak. Another reality friendship bites the dust.