Happy St. Patrick's Day, Crushers! Luckily, there were tons of reminders around the Twitterverse to wear green today, including one from actress Melissa Joan Hart, who told followers, "Happy St Patricks Day! Don't forget to wear your green or you'll get a pinch." Kourtney Kardashian certainly heeded her advice for her son Mason Dash Disick, as she posted, "Mason's little leprechaun outfit! http://bit.ly/gvzfga." Meanwhile, Peter Facinelli (pictured) celebrated St. Patty's Day—"Twilight" style! The "Breaking Dawn" star wrote from his page, "#HappyStPatricksDay. Me? I'll be working in a forest all day. Lotta green there."
Some celebs opted to go the more traditional route today for the Irish holiday, including actor Avan Jogia who tweeted, "Happy St. Patty s day, I will be celebrating with a traditional Irish dinner of corn beef hash, cabbage, and mash. Thanks mum. 
" Even singer/actress Kate Voegele wanted to show off her slight Irish heritage, as she alerted followers, "happy st. patricks day loves! i am 12% irish and proud of it "
Check out the rest of Thursday's best tweets from Hollywood, including news from the set of "Rock of Ages" and Joe Manganiello's latest studly photo shoot! Follow us @hollywoodcrush to get even more celebrity and pop culture news around the clock!
@justinbieber our single #NEVERSAYNEVER is PLATINUM!!!!! THANK YOU!! #SWAG #WEST #EAST #WEAST
-Justin Bieber, Singer
@adammshankman Movie magic is amazing: Miami is becoming a giant backlot for Rock Of Ages. We're building the whole sunset strip here.
-Adam Shankman, Director ("Rock of Ages," "Hairspray")
@joemanganiello Shot the July cover of Muscle & Fitness magazine yesterday... then went directly to Umami burger after
-Joe Manganiello, Actor ("True Blood")
@adamlevine At @NBCTheVoice ...thought I heard a dying cat...turns out it was just @blakeshelton warming up. BOOM!
-Adam Levine, Singer, Reality Judge ("The Voice")
@ninadobrev Finally everyone will stop asking me to convince him to join twitter. Because he did ... @paulwesley is REAL. And No I had absolutely nothin To do w/ it... It's like he woke up one day+a light bulb suddenly turn on + he thought "I have an itch I want to scratch; I want to tweet.
-Nina Dobrev, Actress ("The Vampire Diaries")
@kelly_clarkson Okay....I need a veterinarian for a boyfriend. Who's in?
-Kelly Clarkson, Singer
@mindykaling Where the hell is Gwen Stefani? How many times must I listen to her last 2 albums? L'Oreal!stop distracting her!!
-Mindy Kaling, Writer, Actress ("The Office," "No Strings Attached")
** Hollywood Crush Twitter