It was a big week on social media, with celebrities hanging out on set, on the beach, and at the Cannes Film Festival! Bar Refaeli gained workout inspiration from a shirtless Brad Pitt, while Rihanna had a little trouble getting out of bed the morning after the Billboard Music Awards. Heidi Klum got a lift from a few majorly buff men, and Chris Rock chilled on a balcony between promotional duties Read more

London's DSTRKT club was the spot for Jay-Z and Kanye West's star-studded Watch the Throne afterparty last night. The rappers performed at the O2 Arena before meeting up with their famous friends to celebrate. Gwyneth Paltrow and husband Chris Martin came out for the bash, as did their pal Stella McCartney. Gwyneth and Chris's kids, Apple and Moses, got in on the fun earlier when they watched the Read more

Rihanna and Coldplay totally knocked their Grammy performance out of the park when it came on about one third of the way through the big show this evening in LA. Rihanna kicked things off with a solo rendition of "We Found Love," which she accompanied with her signature super sexy dance moves. She then teamed up with Coldplay for a medley of their songs, starting with "Princess of China" which Read more

Rihanna sparkled at tonight's Brit Awards outside London's O2 Arena. Yesterday, Rihanna celebrated her 24th birthday, and we commemorated the milestone with a look back at her hottest bikini moments. She, meanwhile, reportedly partied late with friends. She got many tweets from fans and friends, including a controversial message from former beau Chris Brown. Chris tweeted, "Happy birthday Robyn!" Read more

The Brit Awards at London's O2 Arena were a star-studded affair with many of music's finest stepping out for the event today. Rihanna, who celebrated her 24th birthday yesterday, switched out of her gold Givenchy gown to take the stage in a white outfit while Adele showed off her vocal talents for the first time in the UK since undergoing throat surgery last year. She wore a black Burberry dress Read more

Gwyneth Paltrow hung out backstage at this evening's Grammy Awards in LA. She's on the long list of stars who will present an honor during the ceremony, and she'll take the stage in her cutout Stella McCartney gown. Gwyneth hit the Grammys with her husband Chris Martin. His band, Coldplay, starred in one of the evening's most anticipated performances when they teamed up with Rihanna. It's a big Read more

Rihanna sported a pair of skimpy, chainmail cutoffs and her trademark red mane for the upcoming issue of Rolling Stone. It's one of two April magazine covers for the singer, who also fronts the latest installment of Vogue. Rihanna opened up about her sense of style and how her relationship with Chris Brown changed her approach to dating in the fashion bible, and she apparently talks sexting and Read more

Rihanna struck a gorgeous pose for the cover of April's Vogue, which is available on newsstands March 22. She smiled for an accompanying shoot from photographer Annie Leibovitz — also make sure to check out the magazine's look back at Rihanna's red-carpet evolution. The pop star opened up about her upcoming movie Battleship, which she shot last Summer in Hawaii, as well as about her famous Read more

Rihanna is Esquire's Sexiest Woman Alive for 2011! The distinction comes during a busy year for Rihanna that's been full of touring and launching new music. She spoke with a writer from the magazine about touring, eating, and her personal life, even touching on her feelings for her ex, Chris Brown. Rihanna's dating Dudley O'Shaughnessy now, according to reports, but this interview took place Read more

The BET Awards celebrated the largest names in hip-hop and R&B with wild fashion, high-energy dance routines, and a mini scandal at LA's Shrine Auditorium last night. The show kicked off with a mashup of hits from Mary J. Blige before the awards were dished out to the night's winners. Taking a break from touring with Britney Spears, Nicki Minaj joined Justin Bieber to present the best male Read more