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Beyoncé (@Beyonce) -  TWEET: "Hey World, It's B! I'm so excited to invite you to my new http://beyonce.com - we've been working hard, and it's finally ready for you XO" In addition to opening a Tumblr account, Beyoncé sends out her first tweet and announces improvements to her official website.(Photo: PacificCoastNews.com)

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Lloyd Banks (@Lloydbanks) - TWEET: "OK V6 4.30" Lloyd Banks reveals the release date of his upcoming mixtape, V6, to be April 30.(Photo: Brad Barket/PictureGroup)

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Chris Brown (@chrisbrown) - TWEET: "Brandy is the best female vocalist to me!!!!!" Chris Brown declares that Brandy is hands down, his favorite female singer. (Photo: David Tonnessen, PacificCoastNews.com)

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Rihanna (@rihanna) - TWEET: "Me n BK Deck" Rihanna tweets a photo of herself and Battleship co-star supermodel Brooklyn Decker.(Photo: Koki Nagahama/Getty Images)

Photo By Photo: Koki Nagahama/Getty Images

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Rev. Run (@revrunwisdom) - TWEET: "J Cole.. Puts out 2 records Dissing family & Diggy & nobody cared.. Some1 leaks a old Diggy record & there's a problem?"Rap pioneer Rev. Run sticks up for his son, Diggy, after the young MC released a diss track aimed at J. Cole.(Photo by Michael Loccisano/Getty Images)

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Nicki Minaj (@NICKIMINAJ) - TWEET: "She's with ME now! Move back bugs!!!! Ahhahahhhahahahhahaha!!!!!!" Nicki Minaj tweets a photo of herself and Kim Kardashian on the set of The Today Show and amid the controversy of the revelation that the reality star and Kanye West are dating, jokes with her Barbz about whom Kim K really belongs to. (Photo: Slaven Vlasic/Getty Images)

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Terrence J (@TerrenceJ) - TWEET: "About to be on Wendy Williams live in a few mins. Tune in! #ThinkLikeAMan" 106 and Park host Terrence J anticipates his appearance on The Wendy Williams Show to promote his upcoming film Think Like a Man.(Photo: Fernando Leon/Getty Images)

Photo By Photo: Fernando Leon/Getty Images

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Kanye West (@KanyeWest) - TWEET: "THERAFLU" Kanye West tweets a photo promoting the release of his new single, the Hit-Boy-produced "Theraflu."(Photo: Felipe Ramales, PacificCoastNews.com)

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Justin Bieber (@justinbieber) - TWEET: "Me and @usherraymondiv gotta have a duet on every album." The Biebz hits the studio with his mentor, Usher. (Photo: Kevin Winter/Getty Images)

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Young Jeezy (@YoungJeezy) - TWEET: “Backstage @ Sound Academy in Toronto. Police closed venue and cancelled the greatest show! I will be back! Next stop London, Ontario! Can’t Ban the snowman. I be back Toronto!”Young Jeezy tweets from the backstage of a show in Toronto that was broken up early by the police due to gunfire in the crowd. (Photo: Porton/PictureGroup)

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Pusha T (@Pusha_T) - TWEET: "MERCY. Midnight tonight http://bit.ly/HWNAy5"Pusha T announces the release of a new GOOD Music single "Mercy" featuring himself, Kanye West, Big Sean and 2Chainz. (Photo: Evan Agostini/PictureGroup)

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Snoop Dogg (@SnoopDogg) - TWEET: "dogg n dre we bacc cochella ya digg? #throwbaccthursdays" Snoop posts an old photo of himself and Dre in anticipation for their performance at the mammoth music festival Coachella, set to take place next weekend in Indio, California.(Photo: Evan Agostini/PictureGroup)

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Tyga (@Tyga) - TWEET: "@tyrabanks lol rack =1000 rack city = 100s everywhere!!" Tyga explains to Tyra Banks what the term "rack city" means. (Photo:  Judy Eddy/WENN.com)

Photo By Photo:  Judy Eddy/WENN.com