Kelly Osbourne, Christian Aguilera: 9 years laters, cat fight still ongoing

Kelly Osbourne has come a long way from her teenage rebellious days where her, er-hem, fuller self has trimmed down to nearly half of what she used to be.

But even with the confidence the Ozzy youngster exudes with her new, sexier appearance — she’s still got something to pick on in her past. Just weeks ago, Osbourne and fashion talk show co-host Joan Rivers made fun of Christina Aguilera’s fuller appearance.

“Maybe she is just becoming the fat b***h she was born to be. I don’t know. She went on to say: “She was a c**t to me. And she bought my house!”  ”She called me fat for so many f***ing years, so you know what? F**k you! You’re fat too.”

In this go-around, the singer got the short end of the stick when unflattering photos of her performance at the Michael Jackson tribute concert England were released. On her show, Osbourne again attacked Aguilera for looking a bit larg-ish.

 Trust me,” she said. “I’m a 2/4. That is not a 2/4.”