Talk about a public war of words!

Just one day after Rob Kardashian took to Twitter to accuse girlfriend Rita Ora of sleeping with more than twenty men behind his back, now the reality star is making more sensational accusations, claiming that he impregnated the "R.I.P" singer before their recent split!

As if that wasn't enough, Kim K's younger brother also blasts the British beauty for having unprotected sex during her various affairs! "So you let me get you pregnant and you let others hit raw?" he tweeted in response to Ora's tweet, "Rob's d**k was wack, I had to go get it somewhere else."

Clean it up, you two! Twitter is public if you haven't realized that!

Although both their vicious tweets have since been deleted, that doesn't mean the feud is over! Even Rob's family, including his sister Khloe, has gotten involved in the drama! "Rob be nice kiddddd," she tweeted at her little bro.

We're dying to know what Kris Jenner thinks of this situation! She's probably busy brainstorming a publicity stunt to distract people from this ongoing scandal!

Getty Images for Clear Channel

Justin Bieber knows how to get the crowd going wild!

The "Baby" singer hit the stage at KIIS-FM's Jingle Ball show at the Nokia Theatre in L.A. wearing a sexy black shirt. We couldn't help but notice those bulging muscles. Pump it up, Biebs.

As for Ke$ha, the 25-year-old "Die Young" singer strutted her stuff in a gold leotard and even did a cartwheel. Whoa ... that's a whole lot to look at!

See more pics from the show in our gallery below.

Last night Quentin Tarantino was honored at the Museum of Modern Art, and everyone from Diane Kruger (who starred in his film, Inglourious Basterds) to Chelsea Clinton were in attendance.

Kruger and Peter Bogdanovich gave speeches praising the writer/director/actor for his vision, and Bogdanovich told the crowd, "A Quentin Tarantino picture is exactly that: It's all him. It's all his. Dynamically, viscerally, excitingly his. An unmistakable signature. And he has had a remarkable influence over American and foreign movies since Pulp Fiction burst on the screen in the mid-'90s. Indeed, I would say he is the single most influential director of his generation."

Bogdanovich added that he had just seen Django Unchained the previous night, and he considered it Tarantino's best work yet. "I'm still shaking," he remarked.

Anne Hathaway has never looked sexier!

The 30-year-old Les Miserables actress is flashing a big smile and short shorts in Glamour's January issue.

When asked about her short 'do, Hathaway tells the mag:

“People are warmer to me. Also, I’m a fairly shy person,and [in the past] on days when I didn’t want to deal with the world, I’d wear a hat and pull my hair around me and hide. I can’t do that now. I have to be me all the time. And it’s changed my habits, because if I was having a bad skin day, I could have a good hair day. Now I have no hair, so I have to take better care of myself because I’m all face!”

Anne looks stunning in bright yellow while rockin' those headphones. You go, girl!

Kate Bosworth is adding a whole lotta sex appeal to the holidays in a stunning Christmas campaign for Topshop.

The blonde beauty performs a sultry version of the classic song "Winter Wonderland" in a mini-movie released by the clothing company.

Michael Polish, Kate's fiance, directed his bride-to-be in this beautifully-shot performance. Kate's custom-made Topshop evening dress is to die for.

Topshop is also hoping that her version of "Winter Wonderland" will make it to the Number 1 spot on iTunes during this holiday season. Time will tell!

Making their first public appearance as a couple since his wife Mary's suicide in May, Robert F. Kennedy Jr. and girlfriend Cheryl Hines attended the 2012 Ripple of Hope gala in New York City last night.

Kennedy's deceased former spouse was apparently driven to take her own life earlier this year amidst increasing financial woes, a bitter divorce battle and upset over his budding relationship with the Curb Your Enthusiasm star.

The gala is held by the Robert F. Kennedy Center for Justice and Human Rights and supports members of the international business, entertainment and activist communities who are committed to social change.

Taylor Swift not only performed at the bash, but was also presented the Ripple of Hope Award as members of ex-boyfriend Conor Kennedy's family looked on with pride.

Later in the evening, T-Swizzle was spotted strolling the streets and holding hands with One Direction beau Harry Styles, who performed Madison Square Garden earlier that night.

Check out the other celebs in attendance in the gallery!

Heidi Klum is definitely a breath of fresh air!

The gorgeous supermodel arrived at Good Morning America rocking black leather pants, a red-embroidered shirt and Christian Louboutin heels. So sexy!

Klum has partnered with American Red Cross to bring toys for the victim's of Hurricane Sandy.

Such a beauty ... inside and out!

When in Amsterdam, Chris Brown apparently likes to get his puff on!

The singer snapped several photos of himself inside a "coffee shop" smoking on what appears to be weed. In fact, in one photo, he has three joints in his mouth.

Brown Tweeted, "dont worry, its medicinal." Gotta love natural medicine.

Rihanna's beau performs at Amsterdam's Ziggo Dome on December 6.