Cory Monteith

Twitter has announced the top tweets of 2013 -- and the No. 1 most popular posting was also one of the saddest.

Lea Michele appeared on today's (Dec. 12) 'Ellen DeGeneres Show' to perform new single 'Cannonball,' but she also revealed how she has been handling her grief over the late Cory Monteith.

Gleeks are still reeling from the death of Cory Monteith and the loss of his character, Finn Hudson. 'Glee' co-creator Ryan Murphy dealt fans of the show another blow, revealing that the show's sixth season will be its last.

Lea Michele is still reeling from the death of her boyfriend and co-star Cory Monteith last July.

Lea Michele has been largely silent since the death of her boyfriend and co-star Cory Monteith, who played her character Rachel Berry's love interest, Finn Hudson, on 'Glee.' Until now. In a heartbreaking confession, Michele revealed that she lost two people when Monteith died.

Cory Monteith's death shook the 'Glee' cast and crew to their core. The tribute episode to the star, who died of a lethal mixture of heroin and alcohol, will air this week. Titled 'The Quarterback,' it was the absolute hardest episode anyone on cast or crew has ever had to shoot.

'Glee' star Cory Monteith died in July at the age of 31, due to a drug overdose. The final coroner's report has been released, revealing that the star, who had checked into rehab in the spring to deal with his issues, was shooting heroin and drinking champagne in a Canadian hotel room on the night of his death. It turned out to be a fatal cocktail.

Jane Lynch delivered an incredibly moving tribute to her fallen 'Glee' costar Cory Monteith at the 2013 Emmys.

The 2013 Emmys, which air tonight (Sunday, Sept. 22) on CBS, will pay tribute to the stars we've lost in 2013 so far, among them actor James Gandolfini and 'Glee' star Cory Monteith. Monteith died of a lethal drug cocktail in July while battling addiction issues. The production is being criticized for including the actor, who was only 31 at the time of death, in a tribute reserved for veterans. Re

Though Dianna Agron wasn't invited to Cory Monteith's tribute episode, she still holds her onetime 'Glee' costar close to her heart. The starlet, who likely won't be returning to the show at all, appeared on 'Katie' to promote her new movie, 'The Family' and wax poetic about her fallen friend.