Who is Mary J Blige cousin?

Mary J. Blige's cousin is the late musician and producer, K-Ci Hailey, who is one-half of the R&B duo K-Ci & JoJo. They share a close family bond and have collaborated musically over the years. K-Ci, known for his powerful vocals, has been a significant influence on Blige's career and the R&B genre.