"My heart is hurting so bad no one can make me believe this is real Father God I pray that you send clarity over this cause I just don't understand My heart hurts it's broken no one can convince me that this is real.... Prayer warriors please pray real hard for his only child, his daughter and family... #HeartOfAnAngel13YrsFamilyForeverWeJustCelebreatedYour40thBirthday..... My God... My God... I can't believe I'm writing this" --Tyrese posted, along with this photo, to his Instagram page

Keep reading for the stars' reaction to the death of "Fast & Furious" star Paul Walker.

"To live in the hearts we leave behind, is not to die -- Thomas Campbell. Pablo, I wish you could see the world right now... and the profound impact, your full life has had on it, on Us... on me... I will always love you Brian, as the brother you were... on and off screen." --Vin Diesel posted on Facebook.

"Paul was pure light. I cannot believe he is gone." --Jordana Brewster

"Lost a dear friend today. So sudden and tragic - @RealPaulWalker was a great man with a big heart and passion. RIP" --"Fast Five" co-star Gal Gadot tweeted, along with this photo

"Missing my brother..." --"Fast Five" co-star Sung Kang

"Your humble spirit was felt from the start, wherever you blessed your presence you always left a mark, we were like brothers & our birthdays are only 1 day apart, now You will forever hold a place in all of our hearts @paulwalker legacy will live on forever. R.I.P." --Ludacris posted on Instagram, along with this photo

"#RIPPaulWalker -he was a lovely person -so sweet and grounded. My heart goes out to his family." --"Into the Blue" co-star Jessica Alba

"Paul was a good dude. Conscientious & not caught up in Hollywood. He knew there was more to life & lived like it. Nice to know you brotha." --"Flags of Our Fathers" co-star Ryan Phillippe

"Damn. Hard to imagine someone so full of life taken so soon. My thoughts go out to your family. RIP Pauly Walker" --"The Skulls" co-star Joshua Jackson

"Thoughts and prayers tonight are with Paul Walker's friends and family, especially his little girl. So sad. Very heavy heart tonight. I just remember him as being so effortlessly golden. He had that way about him, that "thing"... #rippaulwalker #TeamPW" --"Varsity Blues" co-star James Van Der Beek

"@RealPaulWalker May he be in peace. To his family you are in our thoughts and prayers." --Sarah Michelle Gellar

"A very sad day indeed. R.I.P. Paul Walker. Our prayers are with you and your family." --Zoe Saldana

".@RealPaulWalker awful news. Paul was a lovely guy. Handsome as all hell and funny and cool to boot. Terrible news. My condolences." --Dominic Monaghan 

"RIP Paul Walker,loved working with you on "Into the Blue". I Will miss you." --Tyson Beckford 

"My thoughts and love go out to Paul's friends and family." --Jenna Ushkowitz 

"I cannot believe Paul walker passed away. This is so tragic. What an incredibly kind human being to leave us so soon. Pray for his family." --Alexa Vega

"My heart broken for the loss of family friend @RealPaulWalker Such an amazing actor & person Sending thoughts and prayers to his family" --Marie Osmond 

"Wow. I'm kind of in shock about the news on Paul Walker. So sad and tragic. Prayers out to friends and family. #RIPPaulWalker" --Dave Annable

"What an unbelievably sad news. #RIPPaulWalker. My thoughts and prayers go to your loves ones" --Anne V.

"I grew up idolizing @Realpaulwalker I'm so saddened for his family and this stunning tragic loss ..." --Aaron Carter 

"Sleep with the angels Paul. God bless you." --Jaime King

"What horrible news #PaulWalker prayers go out to his family. You just never know.... Cherish each breath, it's a gift" --LeAnn Rimes

"RIP Paul Walker.. Eerie that the star of The Fast & The Furious died in a car accident.. God Bless his daughter" --Mario Lopez

"Spent time w/ Paul Walker in Rio for Fast &Furious.He's one of those people the more time u spend with them, the more u like them. R.I.P." --Nancy O'Dell 

"Shocked & sad to hear about Paul Walker. Met him several times over the years- a hard worker & always kind. Prayers …" --Seth Green

"Paul Walker???? Oh my god. This is heartbreaking" --Kat Dennings 

"I'm a devastated right now. My prayers & condolences go out to Paul Walkers family & friends. He was a amazing talent & will truly b missed" --Kevin Hart

"So sad to hear about Paul Walker. He was my hero when I was in my teens. Super nice guy... crazy." --Frankie Muniz 

"Though I didn't know him well, I did know Paul Walker to be one of the good guys. Obviously, he has been taken from us way too young. #RIP" --Nick Lachey

"Heartbreaking!! One of the most genuine & humble people I have EVER met in this industry.. A TERRIBLE loss, be at peace #PaulWalker" --Wilmer Valderrama 

"No, @RealPaulWalker. No. No. No. Rest with the angels. You. Sweet boy. #beauty #love #RIP" --Alyssa Milano

"Heavy heavy heart tonight. Paul Walker was a genuinely good, sweet, kind, laid back, loving person. Sending much love to his family." --Olivia Wilde

"#RIP Paul Walker .... One of the nicest, most down to earth guys in the business. Glad I had the honor of know & work with such person" --Trevor Donovan

"RIP Paul Walker…our prayers go out to his family and friends #gone2soon" --"She's All That" co-star Usher

"This is awful. Awful. #RIPPaulWalker pls pray for his family, friends & fans. We've lost a great, laid back, sweet, cool man & father" --Gabrielle Union

"Paul was a truly good person in a town of questionable characters...A real life tragedy if there ever was one." --"She's All That" co-star Rachael Leigh Cook

Year in Review: In Memoriam 2013

We said goodbye to some of our favorite stars in 2013 -- from Paul Walker and Cory Monteith to James Gandolfini, Annette Funicello and Mindy McCready. As we prepare to enter 2014, take a look back at the celebs we lost this year.

Paul Walker, Nov. 30, age 40: The "Fast and the Furious" star was killed in a car crash in Santa Clarita, Calif., while hosting his Reach Out WorldWide charity car show, which benefits victims of Typhoon Haiyan and the recent tornadoes in Illinois. The actor was a passenger in a cherry-red Porsche Carrera GT driven by pal and

colleague Roger Rodas that reportedly crashed into two trees and a lamppost before erupting into flames. The '90s heartthrob is survived by his 15-year-old daughter, Meadow Rose.

BING: Was speed a factor in the accident?

FIND: Take a look at the shocking photos of the wreckage

SEARCH: Watch '2 Fast 2 Furious' co-star Tyrese's emotional visit to the crash siteless