Lindsay and Ali Lohan have a baby sister they never knew existed! Bible-thumping Michael Lohan has admitted to fathering a child with another woman while he was married to Dina Lohan, who he divorced in 2007.

“Years later [the woman] contacted me, convincing me that I was the only person she was with and that she had my child,” Michael says in a statement to OK! Magazine.

Michael, who believes the mother of his thirteen year old lovechild is simply after money, has requested a paternity test to validate her claim.

During his incarceration in New York State’s Collins Correctional Facility, Michael penned letters to the girl’s mother, claiming the girl “is beginning to look like Linds, with a mix of [younger brother] Cody, believe it or not,” and sent the child a picture of himself, which he signed “Love Daddy.”

The unidentified mother claims Michael has never visited the girl or provided any financial support.

“It’s time for Michael to take responsibility,” the girl’s mother reportedly told OK!.