Taking to social media, the cast of 'Glee' honors the first anniversary of co-star Cory Montheith's death on July 13, 2013.

Many of his co-stars left tribute messages on Sunday, the same day Cory was found dead in a Vancouver hotel room.

"I personally believe Cory was reborn into some other beautiful form a year ago today. I celebrate him and his life... Wherever that may be," wrote Matthew Morrison.

"I miss him terribly. I know you all miss him too. To Cory..." said Dianna Agron.

"He was a wonderful guy. Thanks for all the good times, pal. Miss ya," posted Darren Criss.

Ryan Murphy kept it simple with a "Miss you."

'I often think of the good memories I shared with Cory and it makes me smile. He was a one of a kind gentleman and will forever be missed.' This was posted by Harry Shum Jr.

Kevin McHale wrote, 'It's been 1 whole year & it's still so surreal, but today is just a reminder of how damn great you were and how much you mean to us all.'

'365 days since you've gone and not a day passes we don't remember your smiling face. We miss you...' said Jenna Ushkowitz.

'I remember your smile and your warm hugs! 1 year without you and your presence is still felt. Miss and love u everyday big bro Our Angel' , said Amber Patrice Riley.

'AWW TODAY IS A TOUGH DAY! BUT I HOLD IN MY HEART SO MANY BEAUTIFUL & FUN MEMORIES! MISS & LOVE THIS MAN/BOY! LOVE U' said Dot-Marie Jones.

More heart touching tributes were paid to the star who died of an alcohol and heroine overdose at the age of 31.