Gearing Up For Comic-Con And Filming 'Mean Girls 2' In Today's Tweet Dreams

Tomorrow marks the official start of the 2010 Comic-Con, but the stars are already gearing up for the anticipated event. "Supernatural" star Jim Beaver told followers, "Finished my Supernatural scenes--headed home tomorrow, on to Comic-Con this weekend," while dearly departed "Vampire Diaries" actress Malese Jow tweeted, "I'll be at Comic Con (7/24) from 12-2pm at the Arcana booth #2415 signing for the release of Koni Konfidential!..."

The sequel to "Mean Girls" also has fan girls a-buzzing this week. Production is already underway and the flick's stars are keeping us in the loop (so fetch!) Meaghan Martin (pictured) posted, "It is so hot. Exterior scenes for Mean Girls 2 are killer" and her co-star Diego Boneta was feeling the heat, too, writing, "Just arrived to the hotel after shooting with a bunch of Mean Girls :)It was really hot out!!"

Check out the rest of today's best celebrity tweets, including Christian Siriano re-teaming with Heidi Klum! Follow us @hollywoodcrush to get even more celebrity and pop culture news around the clock!

@kevwilliamson Just got home from the office. Great day in VampWest. But I miss VampEast.

-Kevin Williamson, Writer, Producer ("The Vampire Diaries," "Scream 4")

@katgraham Just wrapped a great day shooting The Vampire Diaries.

-Katerina Graham, Actress ("The Vampire Diaries")

@csiriano We are making a really cool dress for Hklum, we had 2 days to make it and its for a photo shoot at 6:00 lets pray we finish, wish us luck

-Christian Siriano, Designer, Reality Star ("Project Runway")

@selenagomez So excited to be on Fallon tonight!!!!! I LOVE him so much!

-Selena Gomez, Singer, Actress ("Ramona and Beezus," "Wizards of Waverly Place")

@tarynmanning @ParisHilton wow paris u look amazing.

-Taryn Manning, Actress ("A Lot Like Love," "8 Mile")

@immattgiraud When people ask if I'm that IDOL dude at airports I tend 2 answer yes. But what if they're thinking of someone else?! I could be livin a lie

-Matt Giraud, Musician

@conanobrien It's the hottest July on record in New York City, unless you count that summer I wore short shorts.

-Conan O' Brien, TV Host ("Late Night With Conan O'Brien")

@rainnwilson I'm going to get a sleeve tattoo of a farmers tan.

-Rainn Wilson, Actor ("The Office," "The Rocker")

@chriscolfer I've seriously considered entering this underground sword-fighting club, to gain some street cred. Book clubs are nice too.

-Chris Colfer, Actor ("Glee")

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