February 1st seemed to be chock-full of celebrity birthdays from Lauren Conrad (who turns 25 today) to "Glee" star Heather Morris, who turns 24. The actress-singer-dancer got plenty of birthday wishes from her "Glee"-mates, including Naya Rivera who shared, "Happy birthday Heather Morris!! On my my to work to tell her in person!" But, Ashley Fink (a.k.a. Lauren Zizes) had a different kind of gift for Heather (pictured), as she tweeted,"#HappyBirthdayHemo I love that Heather Morris. I'm gonna kiss her face!"
Elsewhere, Rachelle Lefevre may not be appearing in the final chapters of "The Twilight Saga," but that doesn't mean the actress (who celebrates her 32nd b-day today) isn't still part of the family. That was evident as some of her former co-stars took to their Twitter pages to send Rachelle birthday wishes, including Edi Gathegi, who wrote, "Happy Birthday to my sweet sweet @RachelleLefevre i hope today is splendiferously phantasmagoric."
Check out the rest of Tuesday's best tweets from the stars, including well wishes for new mom Christina Applegate, who welcomed her daughter, Sadie, to the world today! Follow us @hollywoodcrush to get even more celebrity and pop culture news around the clock!
@lancebass Congrats to my love @1capplegate on her new arrival!! Sadie is gorgeous like her mother!! Oh, and her dad too- love you Martyn!
-Lance Bass, Singer ('NSYNC)
@rainnwilson Congrats & love to @1Capplegate and Martyn on the birth of little Sadie Grace!
-Rainn Wilson, Actor ("The Office," "The Rocker")
@spencerpratt @justinbieber just bought @heidimontag and myself #NEVERSAYNEVER3D tickets
-Spencer Pratt, Reality Star ("The Hills")
@tyrabanks Calling all my high fashion ladies. Is it ur turn to be ON TOP? I'm starting my search. Go to tyra.com to get info & be sure to BRING IT 
-Tyra Banks, Model, TV Host ("America's Next Top Model," "Tyra")
@avrillavinge Just got out of band rehearsals. So much fun to be with everyone again and to be working out the new songs!
-Avril Lavigne, Singer
@ladygaga So many nights I've wept, too many thoughts to say. But now its less than 12 days left, till I was Born This Way. X Mother Monster
-Lady Gaga, Singer
@taylorswift13 @yelyahwilliams and I finally exchanged Christmas presents! My contribution: Sheep slippers.
-Taylor Swift, Singer
@jodellemicah I was gonna have a salad but they say "You r what u eat" and who really wants 2b a salad? I'd rather b somethin awesome like grilled cheese.
-Jodelle Ferland, Actress ("Eclipse")
@rosemcgowan Hiccuping for exactly an hour now. Getting nervous it'll stay.
-Rose McGowan, Actress ("Scream")
** Hollywood Crush Twitter