Kelly Osbourne and Christina Aguilera fight over weight

Ozzy Osbourne’s daughter has taken revenge by saying Christina Aguilera was fat.

The 26-year-old made this comments while talking about Aguilera’s appearance at the Michael Jackson tribute concert that took place last week.

The Voice judge has received much criticism since she appeared wearing a tight-fitting black bodysuit with fishnets and massive hair.

On E!’s Fashion Police Friday, co-host George Kotsiopoulous tried to defend Christina against her critics, saying she was “still probably a size 2/4.”

Kelly, who managed to lose 48 pounds after appearing on Dancing with the Stars in 2009, was quick to reply: “I’m a 2/4. That is not a 2/4.”

“She called me fat for years. I was never that fat.”

In a previous episode of Fashion Police, Kelly had criticized the Burlesque star’s weight.

“Maybe she’s just becoming the fat b***h she was always born to be. I don’t know. She was a c*** to me”, she said.

“She called me fat for so many f***ing years, so you know what? F**k you! You’re fat too.”

Fashion police co-host Joan Rivers agreed with Kelly’s opinion, saying, “Lady Marmalade got into the peanut butter again.”