What? Do all blondes look the same to you?

So, I was watching "E! News," and they had a segment on LC, formerly from "Laguna Beach," currently from "The Hills." During the segment, the voiceover declared that Lauren and Kristin (nemeses from "Laguna Beach" days) don't always see eye to eye. But then they showed a clip of Lauren scolding Heidi, her roommate on "The Hills"! Yes, both Kristin and Heidi have short, blonde hair and a viewer cannot make out Heidi's face in the clip, but come on, E! For a network purportedly all about the entertainment industry, shouldn't someone have caught that Kristin and Heidi are not in fact the same person?