The claws are out. Kelly Osbourne has slammed Christina Aguilera -- again -- over her weight.
"She called me fat for years. I was never that fat," Osbourne said on E! Fashion Police in a discussion about the singer's appearance at the Michael Jackson tribute concert.
As RadarOnline.com reported, Christina shocked her fans by wearing a too small, too tight outfit on stage.
This is the second time in as many months that Kelly has let loose about Christina's fuller figure.
"She called me fat for so many f***ing years," Osbourne ranted in September. "So you know what? F**k you! You're fat too."
Osbourne lost 48 lbs. while competing on Dancing with the Stars in 2009, and has successfully kept off the excess pounds.
Kelly Osbourne Slams Christina Aguilera's Weight - The Claws Are Out!