The world was stunned by the sudden death of actor Paul Walker, who was killed in a car crash while attending a charity event on Saturday. After the tragic news spread online, his friends, fans, and colleagues took to Twitter to mourn the loss of the 40-year-old with the charming smile and blue eyes.

His Fast and Furious co-stars including Ludacris and Tyrese were still grappling with the shocking news, while his Takers co-star T.I. remembered a genuine and passionate man. A distraught Game cherished the memory of a true friend and talented actor.

Other stars including Rihanna, 50 Cent, and Miley Cyrus sent their condolences and prayers. Keyshia Cole and Christina Milian fondly recalled a beautiful person inside and out, while Keri Hilson and Ariana Grande were reminded of how fragile life is.

Read some of their heartfelt messages and tributes below.

Ludacris: 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.

Tyrese: 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…

The Game: Sad news about a dear friend. @PaulWalker, one of the best actors & for damn sure a great friend to me & I’m sure everyone else died today in a fiery car crash. This saddens me & is a definite reminder of how short life is. When I woke up this morning this is definitely not what I thought I’d have to post at some point during the day. My sincerest condolences & prayers are with his entire family…… A TRUE FRIEND was lost today & will be missed. Rest In Peace Paul.

T.I.: I’m shocked & saddened to find that the world has lost such a great spirited person. Paul Walker was not only a passionate, talented actor, he was also a sincere man with a genuine personality, that filled a room immediately upon introduction. My family’s hearts & prayers is extended to his family, especially his daughter. He will never be forgotten. May he rest in peace. #RIPPAULWALKER

Rihanna: Very Very sad news…I’m so heartbroken about this! #PW

50 Cent: RIP PAUL WALKER my prayers go out to his family and love ones God Bless

Keyshia Cole: So sad. He was So gorgeous and so kind. Coming from a charity event he had just started. I send love, prayers and my sincere condolences to his family.

Miley Cyrus: im really sad about Paul Walker 🙁

Kelly Rowland: R.I.P. Paul Walker. Wow! So sad. Prayers for his friends and family.

Justin Bieber: RIP Paul Walker

Teyana Taylor: OMG PAUL WALKER DIED..smh #RIPPaulWalker wow so sad….

Machine Gun Kelly: That’s so sad to hear about Paul Walker’s death. The good die way too young.

Ciara: What has happened to Paul Walker is so sad and unbelievable. May he rest in peace. Prayers to his family at this time.

Mary J. Blige: I’m so saddened by Paul Walkers death. Beautiful person and talent gone way to soon. #RIPPaulWalker

Nick Cannon: Rest in Peace to a true light, Paul Walker. To be absent from the body is to be present with The Lord

Christina Milian: Shocked and so sad hearing this news. He was one of my favorite actors. Beautiful inside and out, 4 ever missed & loved.. rest in peace. #paulwalker my condolences to his family and friends

Pitbull: RIP @RealPaulWalker your in a better place now papo now show the heavens who is fast and furious

Amber Rose: I can’t believe Paul Walker died (Tears) Thats so sad! God Bless him and his Family. #RIPPaulWalker 🙁

Diggy Simmons: Mannn… RIP Paul Walker and my condolences to his family. Talented dude

Keri Hilson: Life is so fragile… RIP, Paul Walker.

Jordin Sparks: Life is so fragile. Sending tons of my love & prayers to his family & friends. RIP Paul Walker.

2 Chainz: Prayers go to the Paul Walker family

DJ Khaled: R.I.P. Paul Walker gone to soon ! Condolences to his family!

Marsha Ambrosius: R.I.P Paul Walker HEART BROKEN !!! Prayers and love to all!!!

Mario: Just heard the sade news about Paul Walker | My Condolences to his Fam & friends

Ariana Grande: What a tragedy. Cherish every moment with your friends, family & loved ones. You never know what could happen. Heartbreaking #RIPPaulWalker

Akon: Rest in Peace Paul Walker!!!! You be missed my brother!!!!

Monica: Sending prayers and condolences to the family & friends of Paul Walker. never do we know the time or hour we will be called home. As the heavens welcome u your family & friends will be missing u!! Special prayer for those who have had the pleasure of working with u

Jay Sean: Oh man just read about Paul Walkers death. So young. Ugggh makes me sick especially when it’s caused by an accident. God bless his soul.

T-Boz: RIP Paul Walker. So sad! So young. Hate this happened!

Busta Rhymes: This is soooooo fuckin’ crazy. RIP @PaulWalker. God Bless bro.

Tyler, the Creator: NO PAUL WALKER IT CANT BE TRUE I LOVED YOU NOOO!!!!!!! AHHHH

Melody Thornton: Rest in peace. Such a beautiful man. My heart aches to discover he has lost his life so suddenly. Life is a blessing #PaulWalker #RIPPaulWalker

Iggy Azalea: RIP Paul Walker. So sad..

Swizz Beatz: R.I.P to Paul Walker a great guy gone to soon. blessings to his family

French Montana: Rip Paul walker. Shit real out here

LeToya Luckett: This is beyond sad to me. R.I.P Paul Walker #Lifeistooshort