Happy Birthday, Dianna Agron!

Here's hoping you're all warmed up because a chorus of "Happy Birthday to You" is in order for "Glee" starlet Dianna Agron, who turns 27 years old today.

Many of the actress' co-stars, including Kevin McHale, took to Twitter to publicly express their well wishes on this special day. We hope it's a great one, Dianna!

Leave your birthday messages for Dianna in the comments!