Did RIHANNA unfollow CHRIS BROWN on Twitter because of his new diss track that seemed to be aimed at her? Hollywood gossip certainly thinks so…

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Just hours after Chris Brown released his own mix of Kanye West‘s controversial single “Theraflu,” his ex-girlfriend Rihanna unfollowed him on Twitter. Of course in Hollywood, it’s quite a buzz when celebrities make such a move after seeming to be more than friends.

RIHANNA rocked a skintight black dress at the 2012 MET Gala on Monday, which was held at the Metropolitan Museum of Art.

Check her out:

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The stripper-loving songstress, who usually prefers to look provocative on the red carpet, was surprisingly muted at the star-studded event in a long-sleeved Tom Ford croc-skin gown with a modest open back, which she paired with black Christian Loubotin pumps.

RiRi completed the look with an intricate updo, soft brown eye makeup, and a dark nude lip color.

RIHANNA shakes her hips for “Saturday Night Live” as she performs her singles “Birthday Cake,” “Talk That Talk” and “Where Have You Been.”

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Rihanna gave a pretty hot performance on “Saturday Night Live,” moving her hips and dancing to her songs in front of an elaborate set.

Clad in black socks, fitted shorts a black loose top and a black cap, the Barbadian singer opened her set with her collaborative track with Chris Brown, “Birthday Cake,” and “Talk That Talk” before doing some dance sequences for “Where Have You Been.”

Celebrity news reports that RIHANNA angered the “Saturday Night Live” producers after missing the dress rehearsals, even if she had a pretty valid excuse.

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Rihanna bails at the last minute for the dress rehearsals for “Saturday Night Live” last night, pissing off at least one of the producers of the show, Lorne Michaels, who takes live pre-performances seriously.

The “We Found Love” singer’s place was filled in by the choreographer for the final rehearsal, but she showed up later looking like she never got sick, upsetting the staff and the producers even more.

According to recent celebrity news, RIHANNA remembered to greet her ex-boyfriend CHRIS BROWN on his 23rd birthday on Twitter yesterday.

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Rihanna and Chris Brown sure don’t forget each other’s birthdays, and Rihanna let the Twitter world know it by directly and publicly tweet greeting her infamous ex on his 23rd birthday yesterday.

They’re obviously on really good terms now, especially after collaborating for RiRi‘s controversial “Birthday Cake” remix, but what might Breezy‘s protective and territorial girlfriend–slash Rihanna’s alleged Twitter enemyKarrueche Tran might think?

According to recent celebrity news, RIHANNA recently partied with strippers!

Hollywood not good enough for her anymore?

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Rihanna, who is without a doubt not afraid of posting controversial and provocative photos of her for the cyber world to see, tweeted more photos of her that showed her quite having a blast with unusual new party “friends.”

Before uploading two of the photos with her in a college jersey jacket and tiny denim shorts, the singer tweeted: