Heidi and Spencer do Letterman

Heidi Montag and Spencer Pratt took their 15 minutes of fame from The HIlls and have been running with it. Heidi is now an accomplished (please note sarcasm) singer with a hot bikini video while Spencer is righting his own advice column. Not to mention the pair have posed for more paparazzi photos in the last year than anyone ever and Heidi is now gracing the cover of Rolling Stone. Last night on the Late Show Heidi and Spencer talked in depth about the alleged sex tape that destroyed her friendship with Lauren!