The musician performed in two of the mogul’s best-known recent acts, Danity Kane and Diddy — Dirty Money. She sued him last year, alleging threats and groping.

The Danity Kane singer took the witness stand Friday and said she watched Combs "beat" his ex-girlfriend Casandra "Cassie" Ventura in 2009

Pop singer Dawn Richard told a jury in Sean "Diddy" Combs' sex trafficking trial on Friday that she often saw the hip-hop mogul beat his then-girlfriend Casandra Ventura, who earlier testified that Combs physically and emotionally abused her throughout their 11-year relationship.