With the popularity of Twitter skyrocketing in Hollywood this year, the Twitterverse was chock-full of celebrity rants, break-ups, baby announcements and more... lots more!

Check out the Most Buzzworthy Tweets of 2010.

Most Buzzworthy Celebrity Tweets of 2010

Jessica Simpson's New Snuggle Buddy

Jessica Simpson shared about her new "snuggle buddy" in January, posting this Twitter photo of herself curled up with a pup, and writing, "Sammy and I are falling asleep. Sweet snuggle companion." Tweeting later, "Just to clear things up... Sammy isn't my new pup," Jessica tweets. "I borrowed her for the night from my friends :)" Read the full story!

Just Bieber Sparks Twitter Drama

Justin Bieber set panic in the hearts of Biebermaniacs when he tweeted a photo with Kim Kardashian at the White House Correspondents' Dinner, announcing, "Look, it's my girlfriend @kimkardashian." Kim quickly tweeted back, "I officially have Bieber Fever!!! RT @justinbieber: Look it's my girlfriend @kimkardashian." Kim quickly cured her Bieber Fever after receiving "death threats" from Bieber fans, letting the world know they were just friends. Read the full story!

Director Kevin Smith is Too Big to Fly?

Film director Kevin Smith was asked to leave his seat on a Southwest Airlines flight because he was deemed "too large" to fit in just one seat. "You messed with the wrong sedentary processed foods eater," Smith said via Twitter after being asked to leave the Oakland-to-Burbank flight. The "Clerks" star also posted a fat-faced pic on his Twitter and on his audio blog this weekend, saying he usually buys two seats when he flies Southwest, but this time he was going stand-by and only one seat was available. Read the full story!

John Stamos Tweets a Peek of Britney's 'Glee' Episode

The buzz around September's Britney Spears "Glee" episode soared into the stratosphere when actor John Stamos tweeted a fun on-set pic with Heather Morris, with this caption: "Not the real Britney Spears, but an incredible simulation." Read the full story!

Shocker! Jim Carrey and Jenny McCarthy Split

On April 6, 2010 Jim Carrey and Jenny McCarthy took to Twitter to announce their breakup. Carrey tweeted: "Jenny and I have just ended our 5yr relationship. I'm grateful 4 the many blessings we've shared and I wish her the very best! S'okay!" McCarthy reciprocated, mentioning his daughter in her own tweet: "I'm so grateful for the years Jim and I had together. I will stay committed to Jane and will always keep Jim as a leading man in my heart." Read the full story!

Ellen DeGeneres Tweets About Portia's Name Change

Talk show host Ellen DeGeneres celebrated the news that her wife, Portia de Rossi, had her name officially changed. On her Ellen Show Twitter account on September 23, 2010, Ellen wrote, "I just got some amazing news. The court has granted Portia's name change. She's now officially Portia Winfrey." Read the full story!

Ellen Tweets Video from Backstage of 'Idol'

On Ellen DeGeneres' first night working on "American Idol," she posted a video about the experience! "They told me no pics. Can't say where we're taping — didn't say anything about tweeting a video," DeGeneres writes. Read the full story!

Conan Joins the Twitterverse

While the late-night host was between jobs, on February 24 @ConanOBrien joined the Twitter world! His first tweet... "Today I interviewed a squirrel in my backyard and then threw to commercial. Somebody help me."

The Hoff Provides Some Fun for L.A. Commuters

Country singer LeAnn Rimes spotted actor David Hasselhoff on September 30, 2010 on an L.A. freeway overpass, waving to people! She tweeted, "Omg, David Hasselhoff is standing on a freeway overpass in LA waving to people. Seriously!!! Can someone explain? Laughing so hard I'm crying right now." The Hoff confirmed it minutes later, tweeting back, "It was me on the overpass. I like to make people's commute a little more fun! Give my love to Eddie." Read the full story!

Drake Ties the Knot -- Or Does He?

Music fans have speculated on Drake and Minaj's relationship before, but his tweets at the end of August put the gossip mills in over-drive. On August 27, Drake spread the couple's 'good news' via Twitter. "Please refer to @nickiminaj as Mrs. Aubrey Drake Graham and don't stare at her too long. She's finally mine. :)" with Nicki confirming on her Twitter account, "Yes, it's true. Drake and I tied the knot." Shortly after, reps for both Drake and Minaj clarified: the rappers did not tie the knot. Read the full story!

Lindsay Lohan Tweets Photo Showing Gun to Her Mouth

The hard-partying starlet posted a pic on her Twitter account on April 28 (before entering rehab), in which she's holding a gun to her mouth. The caption below reads, "Polaroid from a shoot." This isn't the first dangerously provocative photo that LiLo has taken. In 2007, pics surfaced on the net showing her with pal Vanessa Minnillo, playing with knives. Read the full story!

Rachel Zoe Announces Pregnancy on Twitter

After months of fashionista speculation, Rachel Zoe finally took to her Twitter on November 17 to confirm that she's pregnant. Bananas! Tweeting ... "Hey everyone! I want to officially confirm to my loyal friends and followers that I am pregnant!..." and "I feel great, Rodger and I are beyond excited and so thankful for all of your love and support. xoRZ & RB."

LadyGaga Hits 7 Million Twitter Followers

On November 6, @LadyGaga thanked her fans as soon as she hit her monumental seven-millionth follower. "HOLY HOOKER 7million little monsters! Thank u for all the amazing messages about BORN THIS WAY. They inspire me and keep me strong."

Kanye West's 'Today Show' Twitter Rant

In early November, the "Today" show aired its much-discussed interview with Kanye West, which concluded with host Matt Lauer announcing that West would return to the show on November 26 for "a special live concert on the plaza" — but Kanye had a different agenda, tweeting on Friday, "I'm not performing on the 'Today' show for obvious reasons." An angry Kanye Twitter rant followed.

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