Happy Birthday, Lea Michele!

Today is "Glee" star Lea Michele's birthday, and plenty of her co-stars took to Twitter today to wish her a happy 27th.

The cast and crew of the FOX series are back on set, filming the first three episodes that will feature Beatles songs, Demi Lovato and a tribute to Cory Monteith.

"Glee" returns with season five on September 26.

Leave your well wishes for Lea in the comments below!