The other molester is finally in town....

Lisa Van Allen -- who allegedly will testify she was in a threesome with R. Kelly and an underage girl -- arrived at the Cook County Criminal Courthouse this morning at 8:50 a.m. It is considered likely she will testify today. They need to escort her right into a cell if you ask me

Van Allen was accompanied by Yul Brown, 38, who says he is her fiance. The couple held hands as they strolled southbound down California Ave., accompanied by a sheriff's deputy. Then they walked up the front steps of the courthouse.

Van Allen, who might testify today after her testimony was put off twice, is wearing a black dress. Her fiance Brown is wearing a green suit.

Pitted against each other as witnesses, Lisa Van Allen and Damon Pryor (Kelly's surprise defense witness) share a past — and a child.

Van Allen, 27, is the prosecution’s star witness who is expected testify she had a three-way sexual encounter with R. Kelly and the underage girl who allegedly appears in a sex video with the singer.

Van Allen, who lives in the Atlanta area, at one time possessed another sex videotape featuring Kelly, sources previously told the Sun-Times. A Kelly aide paid her to get it back, sources said. The tape showed Van Allen, the underage girl, and Kelly engaged in sex acts, a source said.