Time magazine's picks for the most influential people aren't just heavy-hitters in the world, but around the Twitterverse, too! From Lady Gaga to Conan O'Brien, some of our favorite tweeters made the cut. Of course, no one has been more instrumental with the social network than Ashton Kutcher, who tweeted his gratitude to Sean "Diddy" Combs (both pictured) for his contribution to the piece, "hey @iamdiddy thanks for you kind words in the Time article."
Diddy wasn't the only one with nice things to say, though. Tweeting siblings were out in full force today, including Joel Madden, who gave a shout-out to his bro, posting, "look at why @joshmadden is the stylish brother http://joshmadden.com/2010/04/the-day-before/." Meanwhile, Kim Kardashian stuck up for her sister Kourtney, who cleared up a tabloid misunderstanding, writing, "I luv how the 'before' picture is 'after' my boob job lol. It should have said before mason and after mason Lies." Kim's response? "Preach."
Check out the rest of today's best celebrity tweets, including Aly Michalka given hell to them cheerleading cats!. Follow us
@markhoppus Good morning to you all. I hope everyone has a gr--SQUIRREL!!!
-Mark Hoppus, Musician (blink182)
@kirstiealley GOOD MORNING CUPCAKE HEADS...someone brought me cupcakes yesterday..perhaps the person is nuts...the mice ate them... the gods are with me
-Kirstie Alley, Actress, Reality Star ("Kirstie Alley's Big Life")
@leannrimes Why is what I want to eat for breakfast sometimes such a tough decision?
-LeAnn Rimes, Singer
@michaelianblack When people say "Too much is never enough," are they including hot dogs? Because I get queasy after three.
-Michael Ian Black, Comedian, Actor ("Michael and Michael Have Issues")
@evantaubenfeld sometimes I wonder how much better life would be if I were the talking dude in Ace Of Base. seriously, just think about it for a moment.
-Evan Taubenfeld, Musician
@iharryshum Tour rehearsals have begun...
-Harry Shum Jr., Actor ("Glee")
@conanobrien Today my tour takes me to San Diego. San Diego is Spanish for "You Can Attend College Classes Without a Shirt."
-Conan O'Brien, TV Host ("Late Night with Conan O'Brien")
@dougbenson Dear Airports, You are my least favorite places in the world. I'll be seeing three of you today! Sincerely, Passenger 56
-Doug Benson, Comedian, TV Personality ("Best Week Ever")
@melorahardin Air travel is a big part of my life these days! I shouldve been in Up In The Air! Heehee
-Melora Hardin, Actress ("The Office," "17 Again")
@78violet Watching some footage of Hellcats today:) me likey.
-Aly Michalka, Singer, Actress ("Bandslam")

** Hollywood Crush Twitter