Tomorrow is the first scheduled "family day" for Betty Ford Center patient Lindsay Lohan, according to a new report from RadarOnline. On the guest list to visit her 23-year-old daughter for the "jam-packed therapy session" will be Dina Lohan, flying out from New York for the occasion.

Lilo's three younger siblings, Michael Jr., 22, Ali, 16, and Dakota (Cody), 13, will also reportedly join their mom in Southern California for the visit to Betty Ford, where the troubled actress is being treated for cocaine addiction.

Not invited? Michael Lohan.

While the starlet's dad (whose divorce from Dina was finalized in 2007) has repeatedly stated his desire to reconcile with his estranged daughter and embark on joint therapy as a family -- even concocting a short-lived scheme to fake an alcoholic relapse and check into Betty Ford to gain face time with Lindsay -- Radar's source says he's not included in tomorrow's "family day" visit.