Both NBC and FOX held Upfronts on Monday evening, and that meant tons of stars from the networks were on hand for the official announcements of each of the networks' fall schedules.

Of course, as it goes with any glam event in Hollywood, several celebrities who went to the Upfronts took the time to tweet about it. While the biggest news of the night may have been Demi Lovato and Britney Spears joining The X-Factor cast, Eva Longoria also shared her excitement about her new show getting picked up by NBC. Click through the gallery to check out all the tweets from Monday night!

Our favorite Gleek heartthrob is celebrating a milestone birthday today and that’s Cory Monteith!

He may play a high school student on Glee, but he is celebrating the big 3-0 today! Yes, that’s right! Cory is actually 30 years old! Somebody ages quite well!

Cory’s leading lady not only on TV but also in real life, Lea Michele, took to her Twitter as the clock struck midnight to send her birthday wishes!

Check out what she said after the jump!

It's prom time, and the kids of McKinley High are gonna party like it's… the Cretaceous period! That's because Brittany comes up with the best prom theme ever: DINOSAURS!

This episode of Glee is all things prom, from prom court to prom songs to anti-prom parties! Rachel is still in mourning over her disastrous NYADA audition and Puck is still upset about having to repeat his senior year, but prom is a welcome distraction. Meanwhile, Quinn is working hard with Sexy Joe on learning how to walk again -- so how's it going?

Click through for my recap of "Prom-asaurus" – but consider this your official SPOILER ALERT!