Lea Michele Performs 'Cannonball' on 'X Factor' - Watch Now!

Lea Michele takes the stage on the season three finale of The X Factor for her first live performance of her single “Cannonball” on Thursday (December 19) in Los Angeles.

The 27-year-old entertainer tweeted about how excited – and nervous – she was to perform on the show that night.

“AHHH! I WAS JUST ON @TheXFactorUSA!!!! #CANNONBALL #LeaOnXFactor OMG!!!! ⚡️⚡️⚡️⚡️⚡️⚡️⚡️⚡️” Lea tweeted after the show.

Earlier in the week, Lea flashed a big smile as she left a studio with a bottle of water and a healthy, green drink in hand in Hollywood.

FYI: Lea is wearing J Brand leather pants, an Isabel Marant tank, an Iro jacket, and Jerome C. Rousseau shoes.