Kelly Osbourne

They've got nothing on the Harvard baseball team, but the lovely ladies from E!'s Fashion Police put together their own "Call Me Maybe" cover video.

These viral video offerings have become almost as big a craze as the pop song by Carly Rae Jepsen burning up the radio, and it's easy to see why.

How can you not want to have fun with your buds and bop around to such an infectious beat? Katy Perry and friends do it. So to the girls at E!

Joan Rivers, Giuliana Rancic, Kelly Osbourne, George Kotsiopoulos and a bunch of their fabulous friends want you to call them ... well, maybe.

Fashion Police - Call Me Maybe

Kelly Osbourne really does not like Christina Aguilera. She's come out hard against the singer's weight again, saying she was never as fat as Christina is now.

Just two months ago, the E! Fashion Police co-host blatantly called Aguilera a fat bitch and the c-word to boot. Osbourne has never been one to mince words.

When co-host George Kotsiopoulous defended Christina's get-up at the Michael Jackson tribute concert, saying she's "still probably a size 2/4," Kelly scoffed.

"Trust me," she sniped. "I'm a 2/4. That is not a 2/4. I was never that fat."

Christina Aguilera at this month's concert and in January 2010.

The Voice judge has been the source of criticism for pairing a tight-fitting black bodysuit with fishnets, heavy-handed makeup and massive hair at the show.

It's unclear exactly why Osbourne hates her so much, but this summer, she said, "She called me fat for f*cking years, so you know what? You're fat, too."

What do you think? Has Christina Aguilera put on weight recently, and does it matter? Does she look better now? Should Kelly Osbourne shut her yap?

Leave your comments on this vitally important celebrity feud below.

Come on, Kelly Osbourne. Tell us how you really feel about Christina Aguilera.

During a recent episode of E!'s Fashion Police, the former reality star went off on the singer, responding to host Joan Rivers' critique of Xtina at an event in Germany with:

"Maybe she is just becoming the fat bitch she was born to be. I don't know. She was a cunt to me. And she bought my house!"

Kelly wasn't finished, either. She added of Christina: "She called me fat for so many f*cking years, so you know what? F*ck you! You're fat, too."

Osbourne has lost over 48 pounds over the last couple years, all of it starting with a stint on Dancing With the Stars. She has said she'd rather be called "ugly" than "fat."

"I just commit to half an hour a day," Osbourne said of her routine. "It doesn't seem overwhelming and I can handle that. I do half an hour on the treadmill and when I feel like doing more, I'll do a few sit-ups and some weights."

Clearly, she also enjoys exercising her opinions.

[Photos: WENN.com]

Reality star, Dancing With the Stars alum and celebrity fashion critic Kelly Osbourne is dating photographer and artist Anton Lombardi, reports say.

"Kelly is dating and having fun," a source tells Us of the twosome, who were spotted at Osbourne's Manhattan hotel Tuesday. "It's all very new!"

She and Anton "became close in New York but have now headed out to L.A. together. Kelly's friends are really happy for them," says the source.

"He's a really good, very talented guy."

Osbourne split from fiance Luke Worrall after he cheated on her with Elle Schneider, who was born a man and is now awaiting gender reassignment surgery.

That's ... pretty unique. Anyway, glad she's happy now!

They're no Miley Cyrus and Selena Gomez, but Kelly Osbourne and Snooki made red carpet appearances at the Grammy Awards last night themselves.

What do you think of the E! celebrity fashion critic's own ensemble? How does that compare with the orange Jersey Shore star and her gigantic poof?

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Kelly Osbourne thinks Luke Worrall is... a bad word for female genitalia.

In a new interview with Us Weekly, Elle Schneider explains why: this model carried on an affair with Worrall. It began "a year and a few months ago," Schneider says, and it's noteworthy for another reason:

Elle Schneider (pictured) was born as a man named Reynaldo Gonzalez.

Regarding her sex, Schneider - who is awaiting gender reassignment surgery - says of Worrall:

"He knew instantaneously... He was definitely not turned off by it at any point. In fact, he was turned on. He made it very obvious."

Schneider adds that Worrall is the second guy she ever slept with, doing so at the Four Seasons in early 2010 and then losing touch with him until November, at which point he said things with Osbourne were over...

... even though he was trying to reconcile with Kelly simultaneously, unbeknownst to Elle Schneider at the time.

Between Tweeting nasty insults about her ex-fiance and posing like Miley Cyrus, Kelly Osbourne has found time to meet a new man.

An insider tells Us Weekly that Osbournce spent "most of the holidays in the UK lying in bed depressed until her friends finally dragged her out to a club." Once there, she met Rob Damiani, who fronts a band called Don Broco.

"She was standing against a wall not having fun and not really talking to anyone and out of no where a boy came up to her and started chatting her up," a source says. "They were pretty inseparable from that point on."

Now?

"It's like the old Kelly is back," says the friend. "She's happy and glowing!"

Kelly Osbourne has made it clear these days: she's got Miley Cyrus' back.

Now, she's made it even more evident: she's been stabbed in that same body part by ex-boyfriend Luke Worrall.

Amidst rumors of his cheating, Osbourne split with her fiance in July. Based on a series of vitriolic Tweets, it sounds like Worrall tried to reconcile with Kelly over the weekend - and it REALLY didn't go well.

"What do you do when someone lies in the darkest way and you try to tell the person that was lied to but they don't believe you?" Kelly Tweeted, adding:

"Luke Worrall is the biggest piece of s**, he has been trying to get back with me, I only came home for Xmas to see him. Meanwhile, he has been f***ing hundreds of girls...behind my back.

Kelly Osbourne isn't just defending Miley Cyrus from all haters. She's dressing up like this controversial actress!

While Cyrus continues to face the repercussions of her salvia-smoking, her So Undercover co-star continues to show Miley nothing but support. Via Twitter last night, Osbourne posted the following photo:

Kelly captioned this pic with "I'm just being Miley!"

Osbourne, of course, knows all about troubled life in the spotlight. She has entered rehab on three separate occasions for an addiction to painkillers. She was also arrested for assault in August 2008.

Since then, the former reality star has turned her life around, losing a chunk of weight, becoming active in the GLBT community and making it to the finals of Dancing with the Stars. Now, as evidenced by her pose above, Kelly wants just one thing when it comes to Miley and her critics:

Peace.

Miley Cyrus may have her detractors - from Bill O'Reilly to yours truly - but there's one person on whom the troubled star can count: Kelly Osbourne.

On location in New Orleans these days, filming So Undercover with the salvia-loving actress, Osbourne has a message for critics of Cyrus: back off!

"Miley and I have become really close," Osbourne Tweeted last night. "I'm sick of all the haters judging her."

Kelly Osbourne is securely on Team Miley. Are you?

Hey, in defense of "haters," they wouldn't be living up to their label if they weren't critical, would they?

Alluding to the infamous bong video, Osbourne defends her pal by calling it "one mistake," adding:

"Trust me she has learned her lesson! This really makes me mad. Miley is one of the most hard working respectful women I have ever worked with I am learning a lot from her!"