“Now, aren’t you supposed to be in rehab?”

the formerLate Showhost asked Lohan, who appeared on the show to promote an upcoming film.

“What are they rehabbing?

What is on their list?

What are they going to work on when you walk through the door?”

Letterman continued, to laughter from the audience.

“This is vile on so many levels.

The stigma of addiction & rehab,” producer Frank Costacommented.

“The hypocrisy of wanting people to recover, but then judging how they choose do so.

I hope Lindsay Lohan knows how loved she is.

The world has treated her and many others so unfairly.”

Letterman’s reps did not immediately respond to EW’s request for comment.

Another commenter said that Letterman’s 2004 interview withJanet Jackson"gives off the same vibes."