Rod Stewart posted a message for Gregg Wallace on Instagram on Nov. 28 calling him a "bully" for alleged mistreatment of his wife Penny Lancaster on the U.K. 'MasterChef.' This came hours after news broke that Wallace would be stepping back from the show amid an investigation into sexual misconduct allegations.

Rod Stewart hits out at ‘bully’ Gregg Wallace for ‘humiliating’ his wife on Celebrity MasterChef - ‘You had that bit cut out, didn’t you?’ singer said after Wallace stepped down as host

Sir Rod Stewart and Penny Lancaster had been dating for six years when they welcomed their first child, son Alistair Wallace, into the world in November 2005. The couple then married in June 2007, when Alistair was 18 months old, and made plans to have a second child in the late 2000s.