Lindsay Lohan's Dreaming If She Thinks She'll Get 2 Weeks in Jail

Lindsay Lohan knows she's getting jail time when she faces Judge Stephanie Sautner later this morning ... but she's dreaming if she really thinks she'll only get 2 weeks.

We broke the story .... Lindsay will concede she violated probation by getting kicked out of the Downtown Women's Center. As a result, there will NOT be a formal hearing with witnesses and all, but our sources say Shawn Holley will present a list of reasons why the judge should show Lindsay mercy. We're told Holley will focus on Lindsay's therapist, who believes LiLo has made progress. And, ironically, Holley will present evidence from the Downtown Women's Center as well.

As for Lindsay's sentence, we're told the judge has not communicated it to either Holley or the prosecutors. Whatever sentence Lindsay gets, the Sheriff's Dept. tells us Lindsay will serve only 20% ... and that's exactly what every non-felon in L.A. County Jail serves.

Sheriff's officials also tell us Lindsay will not be placed in the general population for security reasons. She'll get her own cell.

Although it's a virtual certainty the judge will sentence Lindsay to jail, it's possible she'll give LiLo time to get her affairs in order -- anywhere from 24 hours to a week, before she has to surrender and begin serving her sentence.