Kourtney Kardashian's Baby, 'Dexter' & Demi Lovato's Boyfriend Wishlist Tops Tweet Dreams

The Hollywood Twitterverse was ooh-ing and aah-ing over the arrival of Kourtney Kardashian's brand new baby boy, Mason Dash Disick, today. Kourtney and boyfriend Scott Disick welcomed him to the world early this morning and celebs gave their best to their brand new family on Twitter all day. "Cheetah Girls" star and Rob Kardashian's ex-girlfriend, Adrienne Bailon (pictured with Kourtney) posted, "Congratulations!!! @Kourtneykardah I LOVE YOU!!!," while Jessica Alba's hubby Cash Warren wrote to the new brood, "congrats!! Welcome to the club Kourt. So happy for you and Scott."

While Kourtney definitely got her own little bundle of joy this Christmas, it seems Demi Lovato has a different kind of boy on her list. Demi tweeted, "Dear Santa, I want a boy for Christmas... wanna hook a sista up?! Oh, and not just any boy.. one that holds the door open for you, and writes hand written letters, and spends time with the rents.. ya hurrd?" Don't we all, Demi? Perhaps actress Candace Cameron Bure will help Demi out. She told fans, "I feel like St. Nick- just dropped off some presents ;)"

Check out the rest of Monday's best celebrity tweets below, including Tom Felton back to filming "Harry Potter", Kris Allen getting lost in New York City, and Cory Monteith 'fessing up to his greatest vice. Don't forget you can always follow us @hollywoodcrush to get all the latest on your favorite stars!

@tomfelton its great to be back filming..rehearsed this morning & getting ready to go on set now...no resting today, going to get a few bumps & bruises

-Tom Felton, Actor ("Harry Potter and the Half-Blood Prince")

@jessicasimpson i fell off of my couch watching dexter last night!! holy crapballs!!

-Jessica Simpson, Singer, Actress ("Employee of the Month")

@pink more bad dreams. if my dreams were movies people would cry and feel uncomfortable. then ask for their money and their two hours back.

-Pink, Musician

@diablocody Eating a gingerbread house for breakfast. A new low

-Diablo Cody, Writer ("Jennifer's Body," "Juno")

@kris_allen Gonna get lost in NYC today. If you see a guy crying in the middle of the road, help him. It's probably me.

-Kris Allen, Musician

@feliciaday A first for me: got criticized on a fashion site for my VGA awards outfit. I KNEW I shouldn't have worn that belt I picked up for 99 cents!

-Felicia Day, Actress ("Dr. Horrible's Sing-a-Long Blog")

@ninadobrev Deciding what to wear to the 'sherlock holmes' premiere tonight!

-Nina Dobrev, Actress ("The Vampire Diaries")

@kevwilliamson I'm tired of this texting thing. Can we go back to talking on our cell phones?

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

@frankenteen I never knew how addicted to my cell phone i was! just forget it at home, and had to turn around (in traffic) to go get it. dependent.

-Cory Monteith, Actor ("Glee")

@jennaonpurpose My hubby:"Secrets of marriage:Treat ur man like u would ur parrot.Feed it, clean cage & put blanket over them when they won't shut up."

-Jenna Elfman, Actress ("Accidentaly on Purpose")

iamedigathegi @cserratos you must think your pretty cool, huh? ice skating circles around me? i got news for you... i let you win.

- Edi Gathegi, Actor ("New Moon")

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