Sean Stewart's mother reportedly had a verbal "catfight" with his ex-girlfriend's mom at a funeral.

Alana Stewart - who is divorced from 27-year-old Sean's rock star father Rod - clashed with Caleigh Peters' parent Christine as they were paying their respects to a mutual friend.

Rod Stewart's son has been accused of stealing his ex-girlfriend's father's car.

Sean Stewart, 27, allegedly took the vehicle from the Los Angeles home of 19-year-old Caleigh Peters last month after she ended their relationship.