For Heidi Montag and Spencer Pratt, it was just another day of posing for the cameras and trying to cash in on their surprisingly long-lasting quasi-fame.

Guess The Hills is a pretty big cultural phenomenon.

We're not sure what the agenda was for Spencer and Heidi on this Tuesday, but with a swarm of celebrity news photographers behind and in front of them, they were surely in heaven as they strolled down Robertson Boulevard ...

  Just another day in the life of Heidi Montag and Spencer Pratt.