Chelsea Handler is known for her humor, which is often livened up by stabs at celebs and current events -- but it seems that she's got something special against Mariah Carey and her hubs Nick Cannon. On Monday, the 'Chelsea Lately' host ripped on the 'Butterfly' hitmaker, specifically targeting her yo-yo weightloss.

"She's worse than Elizabeth Taylor," Handler mused on Howard Stern's SiriusXM show. She's just so ridiculous with her body. You see her one day and she's like 50 pounds heavier or lighter, I mean what is she doing?"

While making a poke at a new mom-of-two's weight is nothing short of tacky, it would have been easier to overlook the instance if it were isolated. Instead, it seems Handler has only been fueling her fire of hate against Mariah and her husband Nick Cannon. "Anyone who's married to Mariah Carey, I'm pretty sure doesn't have a great sense of humor," she joked. "I mean, let's be honest, she's ridiculous. What is her game plan? What kinda person operates like that?"

It all started innocently enough, when Miss Handler made a light jab at Cannon during her 2010 VMAs opening speech, which was followed later by a hilarious tweet. "I just heard nick cannon is starting a comedy tour. Who's going to do the comedy?" she posted to her page.

Unfortunately, it seems Handler's beef is still flamin', and knowing Mariah Carey -- who is now a mama hen and a new spokesperson for Jenny Craig -- she won't be one to live and let live. We can't wait to see how this one turns out!