It's the catfight that just won't stop: Kelly Osbourne vs. Christina Aguilera.
The famous feud heated up on TV as Osbourne mocked Aguilera for wearing a black, curve-clinging dress.
"Maybe she's just becoming the fat [blank] she was always born to be," said Osbourne.
Osbourne took aim at her nemesis on a recent episode of E! network's Fashion Police.
"She was a [blank] to me. She called me fat for so many [blank] years, so you know what? [Blank] you! You're fat too," said Osbourne.
Fresh off a career-comeback as a judge on the TV singing competition The Voice, Aguilera has kept quiet about her rival's biting remarks.
But, the blogosphere certainly isn't quiet.
"Kelly tells it like it is and doesn't sugar coat anything," wrote one blogger.
"Christina is not fat! Just because the girl puts on a little weight does not mean she is fat!" wrote another.
We caught up with another judge of The Voice, Cee Lo Green, at an M&M Pretzel event in New York City.
"There's been an awful lot of scrutiny coming out on Christina for some reason or another. I'm the last person to complain about anyone else's weight. She still looks good to me," said Green.
Osbourne, back in Los Angeles after attending her dear friend Amy Winehouse's funeral in London, appeared on The Tonight Show with Jay Leno, and this time, her target was the royal recycler, Kate Middleton.
"If I'm going to be the future bloody Queen of England, I'm going to wear that dress once, and that's it because I'm giving up my life, all of my privacy, at least I get a new dress every day," said Osbourne.