Who’s the fattest of them all?

From Kelly Osbourne to Christina Aguilera, this is the latest growing knockdown with some pretty heavy words straight from the Fashion Police.

Let me slim it down for ya. After Christina’s not so flattering ensemble at the Michael Jackson tribute concert, her g-factor has created quite the controversy and here’s the skinny:

On Friday, E! Fashion Police’s Kelly Osbourne dishes on the good, the bad, and the ugly in a case of he said she said and she wasn’t alone.

Kelly reveals, “She called me fat for years. I was never that fat.” Looks like “Lady Marmalade got into the peanut butter again,” remarksJoan Rivers. With measurement made by George Kotsiopoulos, he says, “I’m looking at this and thinking, ‘Well, she’s put on weight. This just isn’t flattering.’ But this is just a crappy outfit, regardless. No matter what shape your body is in, it’s just bad.” [She is] “still probably a size 2/4.” However, Kelly agrees to disagree, “Trust me, I’m a 2/4. That is not a 2/4.”

Who’s hungry now? Let’s just eat our words and be done with it.