Let the great Dex debate begin! As we posted last week, "Melrose Place" stud Colin Egglesfield has been cast to play Dex Thaler, the main love interest in the big screen adaptation of the chick lit book "Something Borrowed." Colin, who certainly fits the physical description of the character (read: unbelievably handsome), beat out the likes of "Twilight" actor Peter Facinelli (both pictured), who seemed none-too-happy about the decision. Peter tweeted today, "What?! I didn't get DEX?! R they on crack? lol Its ok. Instead of S'mthing Brrwd I'm doing S'mthing else.A movie I wrote.Thanx 4 the support." Author Emily Giffin later responded, "Sorry to all the PF fans. Guess it wasn't meant to be."
Peter's "New Moon" costar Daniel Cudmore was also a-Twitter today. He campaigned for the 2010 MTV Movie Awards. Daniel argues that his brief, but brutal (poor Edward!) battle with Robert Pattinson is worthy of some golden popcorn, posting, "I do believe that Rob and I's little tussle deserves a vote for best fight at the MTV awards, don't you think!?" You can still vote for which movies and moments you think should be nominated here!
Check out the rest of Monday's best celebrity tweets including why Adam Lambert is sick of talking about Lady Gaga! Follow us @hollywoodcrush to get even more celebrity and pop culture news around the clock!
@pink spent the weekend with the family in philly. walking thru the streets of my childhood. nostalgia on elm st. that's what i call it;)
-Pink, Singer
@tomfelton finished at hogwarts...now i have time for the me myself and my guitar
-Tom Felton, Actor ("Harry Potter and the Deathly Hallows")
@willyville on my way to a Table Read... is a secret one.. cant wait to tell you all what my next movie is..
-Wilmer Valderrama, Actor ("That 70's Show")
@ddlovato For all of you amazing patient people... I'm so thrilled to announce that this week I'm shooting Grey's Anatomy!!!!!!!! 
AHHH!!!!
-Demi Lovato, Singer, Actress ("Camp Rock")
@k8_walsh The world's gonna smell a little better this fall...look out tweeters! 
that's all I'm gonna say for now
-Kate Walsh, Actress ("Private Practice")
@theadamlambert The first question too many reporters ask has to do w GaGa. As much as I love her- it's becoming tiresome. Would prefer to discuss MY art.
-Adam Lambert, Singer
@sn00ki I'm going to have twitter withdrawl!! Gettin geared up to shoot season 2 !! I missed cameras in my face 
-Nicole "Snooki" Polizzi, Reality Star ("Jersey Shore")
@hollymadison123 watchin' Baby Hank on tv . . soooooo cute!
-Holly Madison, Reality Star ("The Girls Next Door")
@diablocody People.com says Kendra loves her new curves. I guess those were tears of happiness streaming down her face in the "I'M SO FAT!" episode.
-Diablo Cody, Writer ("Juno," "Jennifer's Body")
@jimcarrey If I was a military man my name would be Major Breakthrough, or General Wellbeing!
-Jim Carrey, Actor ("A Christmas Carol," "Yes, Man")
** Hollywood Crush Twitter