ET Slideshow: Tinseltown Twitpics

Dianna Agron blogged: Spent time with Rowdy at the Wildlife Waystation yesterday. It was day two at this magical place…. They are a non-profit sanctuary that rescue, rehabilitate, relocate and provide a sanctuary for exotic animals….many have come from labs, private owners, and now have a home. BUT, funding is at a low, and we are brainstorming ways to help them.

Simon Cowell tweeted: No car showed up for me today.... Britney Spears responded: Simon needs to stop stealing my scooter!

Jewel tweeted: Today's pic from the set, me as 1955 era 'Junie' Carter

Ashanti tweeted: Coach Carter Reunion!!! Lol me & @channingtatum 7yrs later

L.A. Reid tweeted: Now THIS is ‪#Britneylicious! @britneyspears @TheXFactorUSA ‪#trouble. Britney Spears responded: Oh and this is only the beginning! You just wait...

Patrick Schwarzenegger tweeted: Miss Austria!

Melanie Brown tweeted: Ahhhh 2 of my babies

Kaley Cuoco tweeted: 4th of July blondes @maggiedudeck

Solange Knowles tweeted: #texastweets Me, and you. Yo mama and yo cuz-n too...

Britney Spears tweeted: Happy 4th of July from the Aloha State!

Heidi Klum posted: Yummy

Ben Flajnik tweeted: A picture of our amazing birthday dinner last night for @bugrobertson .Great food at Bar Crudo, great wines from my personal locker and @juliaflajnik @ gfunkfitz @rachlrobertson

Patrick Schwarzenegger tweeted: Cape cod. Sailing.

David Arquette tweeted: #BootsyBellows tonight!!!

Sam Champion (in the panda costume) tweeted: PANDA madness with @JoshElliottABC ... I told you I would have a surprise!

Jesse Metcalfe tweeted: Incredible day out on the PGA course @Gleneagleshotel! #scotland

Kelly Clarkson tweeted: Me and @JenniferNettles sporting the sexy curler look while getting ready for Duets ....seriously, ridiculously, good looking. Those are the words you're searching for.

Jack Osbourne tweeted about baby Pearl: We couldn't resist the mini mouse hat

Jessica Simpson tweeted: Hope everyone had a great 4th!!

Jenna Ushkowitz posted: Color tutorial w/ @theodoreleaf. Stay tuned!

Sherri Shepherd tweeted: First day back hosting The Newlywed Game! Let the fun begin!

Samantha Giancola posted: Duck phone!

Snooki tweeted: Relaxing w baby & @jenniwoww

Eric Stonestreet posted: When I'm in Kansas this is what like i do. Fix things. With my tools. On my 4 wheeler.

Arnold Schwarzenegger posted: I am relaunching the new, full schwarzenegger.com later this week. I thought this photo of me with the Eastwood special might be a fun way to get the fans involved. Send your best memes. We will feature them on the site.

Marlee Matlin tweeted: Our new Havanese puppy (as of yet unnamed - that will be at a family meeting tonight) has arrived!!!

Hilary Duff tweeted with son Luca: Back from beautiful Napa Valley now packing for NYC! This baby is world traveling!

Sofia Vergara posted: In Mexican waters!!

Ryan Seacrest with No Doubt

Simon Cowell posted: Pudsey was kind enough to let me ride on his private jet to America @OfficialPudsey

Charlie Sheen posted with Slash: "how bad do I want to be ME right now?!?!"

Christina Milian

Paris Hilton posted: How handsome is my Munchkin cat Shorty? Look at those eyes!

P!nk posted: Such a sweetie. Love me some Boston.

Katie Couric posted the following message with Danica Patrick: Start your engines!!!

Jason Derulo posted: Private screening of "SPARKLE" today was incredible!!! I can't wait for the world to experience this spectacular movie! U shine baby! @jordinsparks

Selena Gomez posted with Justin Bieber: Hi Japan. I heart you.

Khloe Kardashian-Odom blogged: Just Two Studs Off to the ESPY Awards. Lamar and Bruce are going to the ESPYS together right now! They both look so handsome :) As a proud wife and daughter I obviously had to share this pic LOL.

Randy Jackson posted: Here's a good one...#throwbackthursday RT!

Paris Hilton posted: My PIC & me @FarrahBritt in our early days #ThrowbackThursday

P!nk posted: Feeling the curls y'all x

Kylie Jenner posted: Getting a Guitar lesson from @sprandoni on his pink guitar

Cory Monteith posted: This is a woman. that looks exactly like cory monteith. If this is real…very eerie….and bizarre!

'American Idol' posted: The ‪#IdolAuditions crowd parts for @RyanSeacrest in front of Chicago's @UnitedCenter. Tomorrow, we head to New Orleans!

Ali Fedotowsky posted: Tweeting at Twitter

Casper Smart posted with Jennifer Lopez: Me and the Bear wake-boarding in Long Beach... Got up her 1st try..

U.S. Figure Skating posted: Michelle Kwan carries the Olympic Flame through Oxford, UK on Tuesday, July 10, 2012.

Khloe Kardashian-Odom posted: Cute pic from the last day of recording #TheLitter. Check it out on the @PetCollectiveTV channel on YouTube :)

Gloria Estefan posted: I'm so obedient!! Que obediente soy! XOXO

Gloria Estefan posted: Yesterday, in Baltimore, I found a little house just my size!

Casper Smart tweeted a photo of girlfriend Jennifer Lopez, who he refers to as Bear, in concert.

Chef Dean McDermott made liquid nitrogen bombs.

Vanessa Lachey tweeted: Ahhhhhhh!!! That feeling u get when u take your hair down from a tight "up-do". So good!

Jada Pinkett-Smith posted with Will Smith and Willow Smith: Being a fatherless daughter these are the moments I cherish. Love. J

Jessica Simpson shared a new pic of baby daughter Maxwell Drew with the caption, "Life."

Jenna Dewan and Channing Tatum tweeted "Ciao Bella!!" from Lake Como, Italy.

Rihanna posted: Last year, same damn time!

Brandy posted: My DC swag! Lol. Check me out practicing

Pregnant in Heels star Rosie Pope introduces daughter, Vivienne.

Sean "P.Diddy" Combs posted: I like being alone sometimes...

Lucy Hale posted with Ashley Benson: Behind the scenes wIth @ashbenzo and I for BONGO

Eva Longoria posted: Having a birthday breakfast with my mom at my favorite restaurant in San Antonio! Yes that's a painting of me on the wall!

Joe Jonas posted at his concert: Baltimore #thenext

John Stamos posted: what are you looking at? you!!

Kim Kardashian posted: Magic Mountain fun today!!! Kendall screaming, Kanye laughing & me crying!

Victoria Beckham's companion posted: There's a very small girl called Harper in the house! @brownthomas

Miley Cyrus tweeted: @therealdenikab why are unicorns & Spice Girls the best thing of life? Love you Scary

Vanessa Lachey tweeted: This dress is so cute for Summer mama's! I got it at A Pea in the Pod. They have so many fun things for preggos!

Sarah Hughes teaches Elmo about figure skating while taping a Sesame Street segment.

John Stamos poses with Angela Lansbury and another Gore Vidal's The Best Man co-star.

Sam Champion posted: Smiles with ABC Circle Seven!

Casper Smart posted with Jennifer Lopez: Happy birthday baby @JLo you're so magic. I Love You

Kristi Yamaguchi posted: Hiking Mt Diablo w/ @CathyYih. Found this cave over looking the valley-beautiful view

Tyrese Gibson posted with Josh Duhamel: Shout to @joshduhamel .... Aka J-Deeeeeezzzzyyy

An Aurora, Colorado hospital posted: What a surprise! 19 Swedish staff members met actor Christian Bale today @ TMCA! More details soon. #theatershooting

Matthew Morrison posted: First day of school! Back in the choir room!!

Even when the paparazzi aren't trailing their every move, social media savvy stars turn the cameras on themselves. Flip through our slideshow for a glimpse into special moments they've chosen to share with fans.