lax airport Heidi Montag Spencer Pratt

On Tuesday evening Heidi and Spencer Pratt arrived at LAX, but rather than taking a car service to get them from terminal to terminal, they -- gasp! -- hopped on the bus.

While this isn't really a huge deal, whoever would have guessed that these two would be struggling to stay relevant after starring on one of the most popular reality television shows ever?

Interestingly enough, the duo will be back on TV in the hour-long E! special, After Shock: Heidi & Spencer, which will air on December 9. According to the network, Heidi will chat about her obsession with plastic surgery, and Spencer opens up about how his life has changed over the last few years. "The second [The Hills] ended, in 2010, the jig's up. Now you're irrelevant. Your 15 minutes are up," he said.

Maybe that's why she wouldn't talk about her recent breast reduction with our videographers!