Hollywood Reacts to Cory Monteith's Death

Hollywood was stunned by the unexpected death of Glee star Cory Monteith on Saturday night.

Hours earlier, Monteith was found dead in a Vancouver hotel room, though the cause of death was still unknown. Here's what his co-stars and fellow celebrities had to say about his sudden passing:
 Glee actor Cory Monteith found dead

Grant Gustin: My thoughts are with Cory and the entire Glee family. Truly no words.

Ian Somerhalder: Its truly a sad day-an amazingly talented young man is gone.So sorry to the family, friends & fans of Cory Monteith.Such a good man.Truly.

Danielle Fishel: I am in shock about the horrible news of Cory Monteith's death. I wasn't lucky
enough to know him but I am saddened today by this loss.

Jesse Tyler Ferguson: I am so sad to hear about Cory Monteith. He was a lovely person with a ton of talent. My heart goes out to his family and friends. RIP Cory.

Paula Abdul: I am shocked and deeply saddened by the heartbreaking news about Cory Monteith. My heart goes out to his family and Lea [Michele].

LeAnn Rimes Cibrian: Wow, just read the news about Cory Monteith. How sad, way too young. I hope he's at peace. Prayers go out to his family & friends.

Neil Patrick Harris: How sad to read about Cory Monteith passing away. What a shame. He was a lovely, kind, talented guy and will be missed.

Hilary Duff: Really sad about Cory Monteith's passing. Saying prayers for friends and family, what a difficult time...

Sophia Bush: I saw him a few weeks ago in NY, looking so happy. heartbreaking... #corymonteith

Katy Perry: Rest in peace Cory. My heart goes out to his family and loved ones. Our prayers are with you.

Rihanna: Cory Monteith, may your spirit be at peace, and may you fly with the angels... Heartbreaking, my prayers are with all of his loved ones!

Kim Kardashian: Just heard about the death of Cory Monteith. So sad. Prayers 4 his family. Praying 4 Lea too! Words cant describe what they must be feeling.

Ricky Martin: I just heard the news.This is so sad. My heart goes out to his family & friends, specially Lea [Michele]. Rest in peace Cory #RIPCoryMonteith

Lance Bass: Devastated about the news of Cory Monteith — such an incredible guy — my thoughts are with his family and friends.

Melissa Joan Hart: So sad to wake up to another young person gone too soon.

Nick Jonas: So sad to hear the news about Cory Monteith. Praying for his family and friends.

Ellen Page: So heartbreaking to hear about Cory Monteith...my deepest condolences to his friends and family.

Olivia Munn: Shocked and saddened by the tragic death of Cory Monteith. All my love to his family, friends & girlfriend. #TooSoon

Denise Richards: this is devastating....my heart goes out to @CoryMonteith & his loved ones....& cast and crew of #Glee a tragic loss....#RIPCoryMonteith

Beverley Mitchell: Absolute shock to hear of Cory Monteith's death. So incredibly sad. Sending love and prayers to his friends and family. What a huge loss!

Retta: Cory Monteith. Stunned. So sad. Condolences. God this day f----- sucks.

Josh Groban: While I only met him briefly on set, I remember him to be an extremely sweet guy. Tragic. RIP Cory.

Alyssa Milano: Beautiful man! Why did you leave us so soon? Rest with the angels, Cory Monteith.

Cheyenne Jackson: What I will remember about Cory Monteith is that he was talented, funny and absolutely kindhearted. We lost a gentleman. RIP.

Taylor Swift: Speechless. And for the worst reason.

Harry Shum Jr.: At this time, please send nothing but love and light. This tragic news still doesn't seem real to me. I love you Cory.

Mark Salling: no.

Romy Rosemont: Cory was a gentle, sweet soul & I am grateful to have had the chance to play his Mom. My heart is w/ his family, his Glee family & sweet Lea

Kristin Chenoweth: RIP CoryMonteith. You will be loved. Always.

Adam Shankman: I will always cherish you in my heart. Thank you for so many wonderful days. I love you CM ... pic.twitter.com/HW5me8dmLo

Dot Marie Jones: I have no words! My heart is broken. Cory was not only a hell of a friend, he was one amazing man that I will hold close to my heart forever. I am blessed to have worked with him and love him so much! My heart is with his family and our whole Glee family! I love you all!

Zooey Deschanel: This is such sad news about Cory Monteith. What an absolutely tragic loss of a very talented young man.

WATCH: Cory Monteith's 10 most memorable Performances on Glee

Nina Dobrev: I'm gutted. Shocked and saddened to hear the news, my heart goes out to Cory's family and friends. Let's respect their space as they grieve.

Damian McGinty: The guy I shot my first acting scene with. The nicest guy I've met. Can't believe it.

Bryan Wynbrandt: Crushed to hear about Cory Monteith. Had the pleasure to write for him on Kyle XY. Enjoyed watching his rapid rise to fame. #RIP

Josh Sussman: I am so saddened to hear about Cory. He was such a great guy/Super-kind &warm. A tragic loss. My heart goes out to all his friends & family.

Alex Anders: Heartbroken by the loss of my friend Cory Monteith. Praying for his family and loved ones. Such a good hearted man that will be sorely missed.

David Boreanaz: R.I.P. Cory Monteith. #Glee.

Kat Dennings: I can't fully process this news. Tragic, tragic loss of a young, promising, talented man. Cory Monteith, rest in peace

Beth Behrs: Shocked and so heartbroken to hear the news about Cory. my heart goes out to his friends and family.

Julie Plec: Oh my god. Oh, no. There are no words. I'm so sorry. Heartbreaking. #RipCoryMonteith

Iqbal Theba: OMG!! My Cory...

Katie Cassidy: So sad to lose a dear friend & talented man... Cory Monteith you'll always be remembered.

Anthony Rapp: My thoughts go out to the friends and family and colleagues of Cory Monteith. Always very sad to see folks lose that battle.

Greg Grunberg: R.I.P. Cory Monteith.  What a terrible, terrible tragedy. So young. So talented. So sad.

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Demi Lovato: #RIPCoryMonteith... So unbelievably tragic. Please #prayforLea..

Lana Parrilla: RIP Cory Monteith. Condolences to his family and friends.  So sad. #Glee

Lance Bass: Devastated about the news of Cory Monteith. Such an incredible guy. My thoughts are with his family and friends.

Kaley Cuoco: #CoryMonteith no words. Prayers. Thoughts [with] his family. This is terrible. Can't speak.

Lamorne Morris: Really awful to lose someone so young and talented. RIP @CoryMonteith

Scott Porter: This news of Cory Monteith's death just shakes me to my very core. So young. My thoughts and prayers to his family and friends.

Monica Potter: Oh my god, my heart & prayers go out to the family & loved ones of Cory Monteith. This is heartbreaking. Tragic.

Joel McHale: Way too soon. A very nice & good guy.

Josh Gad: RIP Cory Monteith. Gone way too soon.

Matt Lanter: Sad news. ...Shocking and terribly sad. #Cory

Phoebe Tonkin: Speechless. Sending strength and light to all of Cory's friends and family. Respect their privacy. x

Chloë Grace Moretz: I just heard about Cory Monteith.. Rest in peace, everyone close to him and affected by this loss you're in my prayers.

Nolan Gerard Funk: Oh my God. Cory. Man. I can't. Praying for you man. You were a good soul.

Photo Gallery: See Cory Monteith's rise to fame on Glee

Jaime King: #CoryMonteith a loss of words. May you rest in Peace. Thoughts and prayers to his family and friends.

Tyler Shields: Wow I am speechless about Cory Monteith such a sweet and amazing guy to young to amazing we always talked about shooting so sad!

Trevor Donovan: Cory was taken from this world too soon... I'm glad I had the opportunity to know him.  #RIP CORY

Holly Marie Combs: Life is hard. Be nice. For you never know what another could be struggling with or against. You never know. #RipCoryMonteith

Rachelle Lefevre: Thoughts & prayers go out to parents and loved ones of Cory Monteith. So sad. Rest in Peace.

Rumer Willis: I am truly saddened to hear about Cory Monteith. What a talented and sweet guy. My prayers go out to his family and loved ones.