"Things just haven't been working out together for us for a long time, and it's nobody's fault, I guess we just grew out of love, but we are not together anymore," Cardi B said in the Instagram video post.
She added that the two were still friends, they still talk, and they share their daughter 5-month-old Kulture Kiari Cephus.
Offset responded, "Y'all won."
They had been married back in September 2017.
Cardi B also noted in the video that it might take some time for them to get a divorce.
Also causing turmoil in the 26-year-old's life, a looming court date Friday in New York City. It stems from claims of assault at a strip club in Queens over the summer.
Cardi B escorted out of fashion party after lunging at Nicki Minaj