Wiz Khalifa claims Amber Rose is an unfit mother in bid for more custody

Wiz Khalifa and his 1-year-old son Sebastian and his mother Peachie Wimbush arrive for the 57th Grammy Awards in this file photo at Staples Center in Los Angeles on February 8, 2015. Khalifa is attempting to gain more custody of his son with Amber Rose, saying the 31-year-old model is a bad mother. Photo by Jim Ruymen/UPI/file photo