Karrueche Tran Made her Split From Chris Brown Official Over Twitter

After he posted a sexy photo with Ariana Grande last week, Chris Brown had everybody wondering if he 's still dating on again/off again girlfriend Karrueche Tran.

Well, the model answered all of our questions yesterday with one, simple tweet:

Not dating anyone stop w the bs.

 The split comes shortly after rumors surfaced that Rihanna and Chris Brown have been talking again.

"Chris started texting Rihanna on her birthday, and the two have been sending each other a flurry of texts ever since," a source divulged to the NY Post. "Rihanna didn't write back right away... But later that night she started getting sentimental and texted back, 'Thank you,' and asked how he was.

Since then the two haven't stopped texting each other and friends are freaked out that she's going to start dating him again."

Tran and Brown have had a tumultuous relationship since they began dating in 2011.  They've broken up several times, one during which he briefly dated Rihanna again before going back to Tran.

Tran has supported him through many run-ins with the law, including his stint in rehab for anger management.

As for the Rihanna rumors, Brown's reps told the NY Post: "Chris is focused about his recovery.  He only wants the best for her."

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Miranda Kerr is Now Modeling Lingerie for Wonderbra

Miranda Kerr hung up her Angel wings last year, saying she could no longer "commit" to Victoria's Secret, and now the Australian model is the new face of rival brand Wonderbra.

The 30-year old mom was just spotted looking insanely glamourous at the Vanity Fair Oscar Party, where she ran into her ex Orlando Bloom. The two have remained on friendly terms since announcing their separation in October of last year, and share custody of their three-year old son Flynn Bloom.

While Miranda told The Sydney Morning Herald last April that she will always be "grateful" to Victoria's Secret for helping to launch her career, a source told People magazine that her split from the brand wasn't so amicable.

The source revealed that Miranda's contract was not renewed because the brunette beauty, "can be difficult at shoots and appearances," and added “She’s standoffish with the rest of the girls.”

To see more photos of Miranda modeling for Wonderbra, launch the gallery above.

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Katy Perry Responds to Miley's Twitter Diss

A cat fight has erupted over Twitter between Miley Cyrus and Katy Perry, and the claws are OUT!

The "Roar" songstress has responded to Miley's tweet about John Mayer's wandering, er, tongue, and things are getting rowdy...

Katy Perry tweeted back to the "Wrecking Ball" singer threatening her with a spanking.

It started at Miley's Los Angeles Bangerz concert where she tried to slip some tongue into a playful on-stage kiss with the "Dark Horse" singer.  Unfortunately for Miley, Katy wasn't having it, pulling away before things got sloppy.

When asked about the kiss earlier this week, Katy explained why she pulled away, saying "God knows where that tongue has been."

Today, Cyrus took to Twitter in response to Katy's comment, saying: "Girl if ur worried abt where tongues have been good thing ur ex boo is ur EX BOO cause we ALL know where THAT been," taking a jab at John Mayer.

Quickly there after, Miley tweeted again about their infamous lip lock with, "Dontchyouuuu act like you didn't lurvvvvv it."

Katy obviously took the whole thing in stride, playing it off as a big ol' joke. And let's be honest Miley could use a good spanking!

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Rihanna and Lupita Nyong'o Are Miu Miu Front Row Besties in Paris

Oscar winner Lupita Nyong'o is all the fashion these days, and this was even more apparent when she sat in the front row at the Miu Miu show in Paris next to Rihanna earlier today (March 05, 2014).

Fresh off her Oscar win for Best Supporting Actress, the 12 Years a Slave star snapped a selfie with RiRi while seated in the front row. Dressed in an oversized shearling coat and black stockings, Rihanna also met up with Oscar winner Jared Leto backstage.

Lupita Nyong'o, who was recently named the new face of Miu Miu, looked absolutely break taking in a burgundy cropped jacket layered over a bejeweled blouse.

Lupito took to Instagram to share some of her favorite moments from the fashion show.

The first pic was captioned, "#MiuMiu selfie with the sensational Rihanna @badgalriri. #Paris"

And the second pic was a montage of pics, "#MiuMiu Fall/Winter Fashion Show, Front Row #selfies. Adèle Exarchopoulos, Léa Seydoux, Elizabeth Olsen and Margaux Robbie.

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