Joseline Hernandez could find herself behind bars after violating a custody agreement as baby daddy Stevie J is granted temporary sole custody of their two-year-old daughter, Bonnie Bella.

According to court documents obtained by TMZ, Stevie was supposed to have Bonnie Bella from Jul. 28 to Aug. 11 and traveled to Miami where Joseline was shooting Marriage Boot Camp to pick her up, but Joseline took the child and flew to L.A.

His lawyer then filed a request to order her to hand over Bonnie Bella or face jail time - which was granted by a judge and thanks to the violation, he now has sole physical custody, and Joseline is left with only visitation rights.

Upon hearing the news, Joseline flew back to Miami, and one of Stevie's children will be picking up Bonnie Bella.

Joseline will no doubt, fight this in court!