Heidi Montag and Lauren Conrad (two people you absolutely do not know) are apparently having some sort of wannabe-celebrity reality TV cat fight. Heidi is desperate for more face time on the MTV reality series The Hills so she's been crashing scenes with her "best friend" Lauren.

“Heidi’s been showing up at shoots uninvited,” a source tells Us. “She knows her best chance for airtime next season [which premieres in August] is to be in sequences with Lauren.” ...