*Everyone knows Mariah Carey’s hubby Nick Cannon and Chelsea Handler are beefing via Twitter.

However, that’s not stopping the ladies from sitting down to chat about Mariah’s new Christmas CD on Chelsea’s talk show “Chelsea Lately” on E!.

BTW, the Twitter beef began when Handler first clowned Nick during the opening monologue of the 2010 MTV Video Music Awards in September. A month later, she was back at it when she tweeted:

“I just heard nick cannon is starting a comedy tour. Who’s going to do the comedy?”

Then Slick Nick came back with: “Everyone knows @Chelseahandler had sex with the head of E! for her show. So when its canceled does he get residual p—- for the reruns?”

Alrighty then!

So while her hub is dealing with the “Twitter beef,” Carey will be sitting down with the enemy on Nov. 3. “Merry Christmas II You” hits shelves Nov. 2.