Kate Gosselin and her ex-husband Jon will face off in court next week amid their nasty custody war over their troubled son Collin, Breaking Celebrity News can exclusively report.

A source told Breaking Celebrity News the bitter ex-spouses are expected to appear in a Pennsylvania courtroom on December 4 for a hearing regarding Jon's shock custody filing for the 14-year-old, who has been living in a facility for his special needs since 2016.

As Breaking Celebrity News exclusively reported from state court records, Jon and his attorney filed papers on October 24, claiming it would be in the teen's best interest to live with his father upon his release from an inpatient center.

Jon's friend Eric Rodriguez told Breaking Celebrity News the former reality TV dad is hoping Collin can be officially checked out of treatment the week before Christmas.

"He looks really, really good," barber Eric said after cutting Collin's hair during a home visit with his father earlier this month.

Jon and Kate's daughter Hannah also lives her father after a nasty custody battle last spring.

As Breaking Celebrity News previously reported, Jon, Hannah and Collin stopped by Reinhardt's Tree Farm in Bernville to pick out a Christmas tree over the weekend.

"Yes, Jon and his family were here," a tree farm employee told Breaking Celebrity News, adding that the clan appeared "happy."

For exclusive details on Jon and Kate's custody battle, keep reading Breaking Celebrity News.