We're huge fans of Glee and we're not the only ones. Hollywood's hottest stars want to get involved with the hit show.

The latest in a long line of stars who are rumoured to be making a guest appearance on the musical show is Pretty Woman star, Julia Roberts.

The shows creator, Ryan Murphy, told the Sun: "She saw the rough cuts and fell in love with the show.

"I don't know if Julia's going to do it - maybe."

Celebs confirmed to be making guest apperances are Jennifer Lopez as a dinner lady and excitingly, Grease star Olivia Newton John, who will sing her hit Physical with Cherrios coach Sue Sylvester!

Sue is hilarious and is by far our favourite character, so the more me see of her the better!