Lindsay Lohan's alleged sex list that recently circulated the web is apparently real. The 27-year-old attested to it during her appearance on Watch What Happens Live with Andy Cohen on Thursday.

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"You know, I'm going to get serious for a second," the actress told Cohen. "That was actually my fifth step in AA at Betty Ford. And someone, when I was moving during the OWN show, must have taken a photo of it. And so that's a really personal thing and it's really unfortunate... I talk about it on the last episode on the OWN show, so to be continued."

In Touch Weekly released a photo in March of a list with 36 names of Hollywood stars Lohan had reportedly slept with. Some of the names on the list include Ashton Kutcher, Jamie Dornan, Zac Efron, Justin Timberlake, James Franco, Adam Levine, Colin Farrell, Heath Ledger and Joaquin Phoenix.

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The magazine also quoted a source who said he watched as the Mean Girls star wrote the names on the piece of paper at the Beverly Hills hotel in January.

"It was her personal conquest list," the source said. "She was trying to impress her friends with the list and then tossed it aside."

Yet, a sneak peek from the upcoming two-hour finale of Lohan's, OWN's eight-part documentary series, shows that the star was actually devastated that it leaked.

"The story's on Page Six right now," she says in the clip. "That actually really is annoying right now. It's f--ked up. And I don't want a part in it."

She also adds: "The fact that that happened was not only humiliating, but just mean."

The documentary's finale airs Sunday at 9 p.m. ET/PT on OWN.