Kelsey Grammer is still bitter.

The “Frasier” star bailed on an interview with CNN’s “Piers Morgan Tonight” Wednesday after producers aired a photo of Grammer’s ex-wife Camille in the show’s open.

Kelsey and Camille – who appeared on “Real Housewives of Beverly Hills” – were married for 13 years, but their relationship eroded in 2010. Custody battles and allegations of impropriety followed. Kelsey has since re-married, with current wife Kayte giving birth in July.

Despite Grammer’s new wife and baby, his animosity for Camille remains.

Morgan wrote about Grammer storming out of the studio on Twitter.

“Extraordinary,” he wrote. “Never had this happen before.

“I like Kelsey Grammer personally, but this was a shockingly unprofessional thing to do. I wasn’t even going to mention his ex-wife!”