Things are not so sweet between the cast members of Welcome to Sweetie Pie's. 

Robbie Montgomery, the family matriarch and owner of the Sweetie Pie's restaurants featured on the OWN reality show, has filed a lawsuit against her own son, Tim Norman, alleging trademark infringement over his use of the name at three of his restaurants in the St. Louis area and California.

The St. Louis Post-Dispatch reports that the suit was filed Monday in federal court in St. Louis, alleging that Norman illegally used the trademarked Sweetie Pie’s name at three new restaurants he opened, which are not franchised from his mother's brand. The lawsuit accuses Norman of misusing signage and promotional materials for his locations and diverting “substantial sums” of revenue from one of Montgomery's restaurants to his new ventures.
That Norman “is identified as a member of Miss Robbie’s family on the Sweetie Pie’s show, along with his position on the show, further increases the potential of causing confusion in the marketplace,” the lawsuit says.
Sadly, this is the last thing this family needs following the tragic death of Montgomery's grandson Andre Montgomery, 21, after a fatal shooting this past March. Hopefully they'll be able to resolve it amongst themselves before things get ugly in court.
Speaking of reality TV, lawsuits, tragic deaths and families torn about, catch up with the latest on Bobby Brown's battle against Bobbi Kristina's boyfriend Nick Gordon above.