The teaser did NOT prepare us for this!
Ch-ch-check out the WHOLE interview (above)!
And DAYUM did girl surprise us with her willingness to make fun of herself, her no sh*t-taking demeanor, and CHARM!
Granted, at times the awkwardness is palpable and Lilo REFUSES to let Letterman make certain jokes AND avoids answering questions about WHY she is heading to rehab…
But at least she talks about heading to treatment, and seems to open up — even if it's just a crack — to the late night talkshow host.
In fact, Lindsay gets SO emotional during the interview, she's moved to tears!