The actress has seemingly admitted she did write the list of famous sexual partners, which included Hollywood stars Ashton Kutcher, Zac Efron, Justin Timberlake, Orlando Bloom and the late Heath Ledger.
The 27-year-old star breaks down in tears and appears to confirm the authenticity of the list in a preview for the finale of her docu-series on Oprah Winfrey's OWN network.
She said: "The fact that that happened was not only humiliating, but just mean," after a headline of her list of sexual partners is displayed on the screen.
The list was printed in InTouch Weekly last month and the cameras appear to have captured her reaction to the story after it was published.
In the promo, Lindsay also said: "The story's on Page Six right now. This actually really is annoying now. It's f***ed up and I don't want a part in it, " adding, "For those two weeks I took off, no-one knows this..." she sobs, before the clip ends, giving viewers a snippet of what's to come.
Meanwhile, Lindsay also appears on Bravo's 'Watch What Happens Live' tonight (18.04.14) with host Andy Cohen, who also asks her about the sex list.
The 'Liz and Dick' actress comes clean, admitting the list was "actually my fifth step in AA [Alcoholics Anonymous] at Betty Ford [clinic]" and that someone "must have taken a photo of it" when she was moving house.
She added that it was "unfortunate" but insists she doesn't regret taking part in the docu-series with Oprah.