By Breaking Celebrity News Staff

Kelly Osbourne is not apologizing for slamming Christina Aguilera’s weight gain!

The Fashion Police co-host revisits her longtime feud with the singer in the May 2012 issue of Glamour, standing by the slamming comments that she made about the Grammy winner’s weight gain on her show – and Breaking Celebrity News has the details.

The self-described FFP (former fat person) brought up Christina as part of her DO’s and DON’Ts of Body Confidence feature. 

“Sometimes it’s other people’s voices you have to shut out. That’s what happened with me and Christina Aguilera, which people don’t understand. She called me fat for years,” Kelly explains.

“One night on Fashion Police I said, ‘F—k you. Now you’re fat too.’ I didn’t say I wasn’t fat. I said, ‘Now you know how it feels.’ And I’m sorry, but I stand by that. I make a point on the show never to say anything about anybody that I wouldn’t say directly to their face. I’m famous, and she’s famous; it doesn’t mean I can’t stand up for myself.”