Lauren Conrad on The Late Show

Lauren Conrad was interviewed by David Letterman on The Late Show last night, and if you've seen any of the talk show host's prior interactions with The Hills star and her reality TV counterparts, you know how funny that can be.

In the interview, Letterman suggested that maybe Lauren Conrad herself is to blame for her girl problems, then proceeded to skewer Brody Jenner (he "would live in a tree" if it weren't for reality TV) and Spencer Pratt ("what a weasel").

LC did get to talk about her clothing line and life on reality TV ...

Lauren Conrad and David Letterman