Us Weekly breaks down why Cardi B is in court after the rapper was sued by a security guard who accused her of assault ...

Cardi B, left, and Offset arrive at the Pre-Grammy Gala And Salute To Industry Icons in Beverly Hills, Calif. on Jan. 25, 2020.

Cardi B, left, and Offset arrive at the Pre-Grammy Gala And Salute To Industry Icons in Beverly Hills, Calif. on Jan. 25, 2020.

Cardi B, left, and Offset arrive at the Pre-Grammy Gala And Salute To Industry Icons in Beverly Hills, Calif. on Jan. 25, 2020.

The rapper, whom a former security guard has accused of assaulting her in 2018, took the stand this week in Los Angeles. Her ...