Last year Jennifer Hudson and her longtime fiancé David Otunga ended their 10-year engagement and began a bitter custody battle over their 9 year-old son David Jr [click here if you missed that].
Now David wants Jennifer's sister Julia to testify in court...
According to reports David has subpoenaed Julia Hudson requesting she sit for a deposition under oath.
The case is sealed so the reason for questioning Julia is unclear.
Julia Hudson is Jennifer's only surviving sibling after her estranged husband, William Balfour, murdered their brother, mother and Julia's 7-year-old son [click here and here if you missed that].
