Following news of the untimely death of popular 31-year-old 'Glee' star Cory Monteith, his friends and colleagues took to Twitter in droves to express their shock and sadness.

While a rep for Monteith's girlfriend and 'Glee' co-star, Lea Michele, issued a statement that said simply, "We ask that everyone kindly respect Lea's privacy during this devastating time," other co-stars wrote public tributes -- as did everyone from Taylor Swift to Zooey Deschanel.

Here's a sampling.

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